Intel 4004 - Revision history

Jnc: Grammar, punc

2023-07-14T14:01:31Z

Grammar, punc

Jnc: Re-factor; discuss width

2023-07-12T20:13:20Z

Re-factor; discuss width

← Older revision		Revision as of 20:13, 12 July 2023
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	[[Image:i4004.jpg\|150px\|thumb\|right\|i4004]]		[[Image:i4004.jpg\|150px\|thumb\|right\|i4004, in later plastic packaging]]

	The '''Intel 4004''' [[microprocessor]] ~~resulted when~~ the ~~Japanese company~~ [http://en.wikipedia.org/wiki/~~Busicom Busicom~~] ~~contracted~~ [[~~Intel~~]] in ~~1969 to create a [[integrated circuit\|chip]] set for a [[printer]]-calculator~~.		The '''Intel 4004''' [[microprocessor]] was the first commercially available microprocessor (although not [[Intel]]'s first microprocessor design; work had started on what became the [[Intel 8008]] first). It was designed by [http://en.wikipedia.org/wiki/Federico_Faggin Federico Faggin], who in 1974 left Intel and started [[Zilog]]. (Interestingly, Fagin 'signed' his work; the chip contains an "F.F." in one corner.)

	Busicom eventually permitted Intel to use the chipset design for non-calculator applications (the year this happened was 1971, according to sources). The [[Central Processing Unit\|processor]] chip was called the 4004 and sold for $200. This was the first commercially available microprocessor (although not Intel's first microprocessor design; work had started on what became the [[Intel 8008]] first).. It was designed by [http://en.wikipedia.org/wiki/Federico_Faggin Federico Faggin], who in 1974 left Intel and started [[Zilog]].		==Details==

	The 4004 ~~(see picture)~~ came in a 16-pin [[Dual Inline Package\|DIP]][1] and had ~~some~~ limitations when compared to later microprocessors. It could only [[execute]] code out of ~~erasable~~ [[Read-only memory\|ROM]], [[Random Access Memory\|RAM]] was only used for storing data, and this complicated the life of the [[programmer]] somewhat~~. The chip also needed a lot of support [[logic]]~~.		The 4004 came in a 16-pin [[Dual Inline Package\|DIP]]<sup>[1]</sup> [[integrated circuit\|chip]], and had limitations when compared to later microprocessors. It could only [[execute]] code out of [[Read-only memory\|ROM]], [[Random Access Memory\|RAM]] was only used for storing data, and this complicated the life of the [[programmer]] somewhat.

	~~Data and~~ [[address]] information were multiplexed on a 4-bit [[bus]]. The need to multiplex the ~~buses~~ was part of the constraints caused by using a 16-pin DIP (40-pin DIPs were already in use by competitors at the time), enforced by Intel's management. Multiplexing reduced the [[instruction]] execution speed that could have been achieved, for example.		It seems to have limited support for off-chip RAM; the 16 4-bit-wide internal [[register]]s seem to be the primary locations for writing data; there is no 'store' [[instruction]]. But the SRC instruction seems to send an [[address]] out, for later used by the Wxx instructions. And the CM-RAM[0123] lines from the [[Central Processing Unit\|processor]] chip are used to control "4002 RAM chips".

			Data and address information were multiplexed on a 4-bit [[bus]]. The need to multiplex the bus was part of the constraints caused by using a 16-pin DIP (40-pin DIPs were already in use by competitors at the time), enforced by Intel's management. Multiplexing reduced the instruction execution speed that could have been achieved, for example. The chip also needed a lot of support [[logic]].

			The 4004 was only the processor part of the chip set produced for the original client (Busicom; below). The original setup was known as 'The 4000 Family', AKA the 'Busicom Chip Set', AKA the 'MCS-4 Chip Set' and consisted of:

	~~The 4004 was only the processor part of the chip set produced for Busicom. The original setup was known as 'The 4000 Family', aka 'Busicom Chip Set', aka 'MCS-4 Chip Set' and consisted of:~~
	* The processor (the 4004)		* The processor (the 4004)
	* 2048-bit ROM ~~(read only memory)~~ with a 4-bit programmable I/O port (the 4001)		* 2048-bit ROM with a 4-bit programmable I/O port (the 4001)
	* 4-registers x 20 locations x 4-bit ~~RAM (programmable memory)~~ with a 4-bit output port (the 4002)		* 320-bit RAM arranged in 4 'registers' containing 20 locations of 4-bit 'characters', with a 4-bit output port (the 4002)
	* A shift register type memory with serial input and parallel output (the 4003)		* A shift register type memory with serial input and parallel output (the 4003)

	<small>[1] Note: The BYTE article incorrectly states that the chip came in an ''18''-pin DIP.</small>		<small>[1] Note: The BYTE article incorrectly states that the chip came in an ''18''-pin DIP.</small>

			===Width===

			The 4004 is often considered a '4-bit' chip, but the discussion is complicated; made even more confusing that there is no universally accepted standard for what sets a machine's 'width'; and indeed, for most suggested benchmarks, one can find a machine which violates it:

			* [[address space]] ([[KA10]]; 18 bits - 36 bit machine)
			* instruction size ([[Motorola M68000 family]]; 16 bits - 32 bit machine)
			* [[bus]] width ([[Motorola MC68000]]; 16 bits - 32 bit machine)
			* [[arithmetic logic unit\|ALU]] width ([[LSI-11]]; 8 bits - 16 bit machine)

			On a number of these metrics, the 4004 is actually ''sort of'' an 8-bit machine:

			* Instructions are all multiples of 8 bits long
			* Instruction addresses (in some [[jump]]s, etc) are 8 bits long (although there is one in which they are 12 bits)
			* Immediate data is sometimes 8 bits wide
			* Register pairs, the target of 'load immediate' instructions, are 8 bits wide
			* Some data is 8 bits wide (in the FIN instruction, the data goes to a register pair, so 8 bits wide)

			On the other hand:

			* The [[accumulator]] is only 4 bits wide
			* The ALU (and thus all data handling in arithmetic instructions) is only 4 bits wide
			* Some data is 4 bits wide (it's not clear if in the LDM instruction, the 'DDDD' bits are immediate data, or the address of the data [probably immediate]; either way, it goes to the accumulator, so only 4 bits wide)

			So, it's truly a mix.

			==History==

			The 4004 resulted when the Japanese company [http://en.wikipedia.org/wiki/Busicom Busicom] contracted [[Intel]] in 1969 to create a chip set for a [[printer]]-calculator.

			Busicom eventually permitted Intel to use the chipset design for non-calculator applications (the year this happened was 1971, according to sources). The processor chip was eventually called the 4004 and sold for $200.

	==External links==		==External links==
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	[[Category: Intel Microprocessors]]		[[Category: Intel Microprocessors]]
			[[Category: 4-bit Computers]]
	[[Category: 8-bit Computers]]		[[Category: 8-bit Computers]]

Jnc: /* External links */ +more docs

2023-07-12T00:10:09Z

External links: +more docs

← Older revision		Revision as of 00:10, 12 July 2023
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	==External links==		==External links==

			* [http://www.bitsavers.org/components/intel/MCS4/ MCS4] - documentation at [[Bitsavers]]
			** [http://www.bitsavers.org/components/intel/MCS4/MCS-4_UsersManual_Feb73.pdf MCS-4 Micro Computer Set Users Manual] - all the chips in the set (4001 ROM; 4002 RAM; etc)
			<!-- http://datasheets.chipdb.org/Intel/MCS-4/datashts/MCS4_Data_Sheet_Nov71.pdf -->
	* [http://datasheets.chipdb.org/Intel/MCS-4/datashts/intel-4004.pdf 4004 Single Chip 4-Bit P-Channel Microprocessor] - data sheet with detailed specifications		* [http://datasheets.chipdb.org/Intel/MCS-4/datashts/intel-4004.pdf 4004 Single Chip 4-Bit P-Channel Microprocessor] - data sheet with detailed specifications
	* [http://archive.computerhistory.org/resources/text/Oral_History/Intel_4004_2/102658187.05.01.acc.pdf Oral History Panel on the Development and Promotion of the Intel 4004 Microprocessor]		* [http://archive.computerhistory.org/resources/text/Oral_History/Intel_4004_2/102658187.05.01.acc.pdf Oral History Panel on the Development and Promotion of the Intel 4004 Microprocessor]
	* [http://www.intel4004.com/ The Intel 4004 Microprocessor and the Silicon Gate Technology]		* [http://www.intel4004.com/ The Intel 4004 Microprocessor and the Silicon Gate Technology]
			* [https://www.4004.com/ Intel 4004 — 50th Anniversary Project]
	* [http://www.righto.com/2015/05/the-texas-instruments-tmx-1795-first.html The Texas Instruments TMX 1795: the (almost) first, forgotten microprocessor] - Ken Shirriff's article about the first microprocessors, covers the 4004 also		* [http://www.righto.com/2015/05/the-texas-instruments-tmx-1795-first.html The Texas Instruments TMX 1795: the (almost) first, forgotten microprocessor] - Ken Shirriff's article about the first microprocessors, covers the 4004 also
	* [https://archive.org/details/byte-magazine-1978-07/page/n65/mode/2up\|BYTE Volume 3, number 7, July 1978, "The First Ten Years of Amateur Computing"]		* [https://archive.org/details/byte-magazine-1978-07/page/n65/mode/2up\|BYTE Volume 3, number 7, July 1978, "The First Ten Years of Amateur Computing"]

Jnc: /* External links */ +data sheet; correct cat (see Talk:)

2023-07-11T17:57:46Z

External links: +data sheet; correct cat (see Talk:)

← Older revision		Revision as of 17:57, 11 July 2023
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	==External links==		==External links==

			* [http://datasheets.chipdb.org/Intel/MCS-4/datashts/intel-4004.pdf 4004 Single Chip 4-Bit P-Channel Microprocessor] - data sheet with detailed specifications
	* [http://archive.computerhistory.org/resources/text/Oral_History/Intel_4004_2/102658187.05.01.acc.pdf Oral History Panel on the Development and Promotion of the Intel 4004 Microprocessor]		* [http://archive.computerhistory.org/resources/text/Oral_History/Intel_4004_2/102658187.05.01.acc.pdf Oral History Panel on the Development and Promotion of the Intel 4004 Microprocessor]
	* [http://www.intel4004.com/ The Intel 4004 Microprocessor and the Silicon Gate Technology]		* [http://www.intel4004.com/ The Intel 4004 Microprocessor and the Silicon Gate Technology]
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	[[Category: Intel Microprocessors]]		[[Category: Intel Microprocessors]]
	[[Category: 4-bit Computers]]		[[Category: 8-bit Computers]]

Larsbrinkhoff: 4-bit cat.

2023-07-11T16:41:57Z

4-bit cat.

← Older revision		Revision as of 16:41, 11 July 2023
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	[[Category: Intel Microprocessors]]		[[Category: Intel Microprocessors]]
			[[Category: 4-bit Computers]]

Jnc: /* External links */ +CHM oral history

2023-06-01T20:30:54Z

External links: +CHM oral history

← Older revision		Revision as of 20:30, 1 June 2023
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	* A shift register type memory with serial input and parallel output (the 4003)		* A shift register type memory with serial input and parallel output (the 4003)

	==~~References~~==		<small>[1] Note: The BYTE article incorrectly states that the chip came in an ''18''-pin DIP.</small>

			==External links==

			* [http://archive.computerhistory.org/resources/text/Oral_History/Intel_4004_2/102658187.05.01.acc.pdf Oral History Panel on the Development and Promotion of the Intel 4004 Microprocessor]
			* [http://www.intel4004.com/ The Intel 4004 Microprocessor and the Silicon Gate Technology]
			* [http://www.righto.com/2015/05/the-texas-instruments-tmx-1795-first.html The Texas Instruments TMX 1795: the (almost) first, forgotten microprocessor] - Ken Shirriff's article about the first microprocessors, covers the 4004 also
	* [https://archive.org/details/byte-magazine-1978-07/page/n65/mode/2up\|BYTE Volume 3, number 7, July 1978, "The First Ten Years of Amateur Computing"]		* [https://archive.org/details/byte-magazine-1978-07/page/n65/mode/2up\|BYTE Volume 3, number 7, July 1978, "The First Ten Years of Amateur Computing"]
	* [http://web.archive.org/web/20211225184908/http://www.intel4004.com/ http://www.intel4004.com/]
	~~----~~

	~~<small>[1] Note: The BYTE article incorrectly states that the chip came in an ''18''-pin DIP.</small>~~

	[[Category: Intel Microprocessors]]		[[Category: Intel Microprocessors]]

ForOldHack: /* References */ Updated refrence links to work. (Byte, Intel4004)

2022-01-06T10:24:46Z

References: Updated refrence links to work. (Byte, Intel4004)

← Older revision		Revision as of 10:24, 6 January 2022
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	==References==		==References==
	* BYTE Volume 3, number 7, July 1978, "The First Ten Years of Amateur Computing"~~<br>~~		* [https://archive.org/details/byte-magazine-1978-07/page/n65/mode/2up\|BYTE Volume 3, number 7, July 1978, "The First Ten Years of Amateur Computing"]
	* [~~http://www.intel4004.com~~ http://web.archive.org/web/20211225184908/http://www.intel4004.com/]		* [http://web.archive.org/web/20211225184908/http://www.intel4004.com/ http://www.intel4004.com/]
	----		----
	<small>[1]Note ~~that the~~ BYTE article incorrectly states that the chip came in an ''18''-pin DIP.</small>
			<small>[1] Note: The BYTE article incorrectly states that the chip came in an ''18''-pin DIP.</small>

	[[Category: Intel Microprocessors]]		[[Category: Intel Microprocessors]]

ForOldHack: /* References */ Replaced dead link with Archive of page (Intel4004.com)

2022-01-06T10:02:17Z

References: Replaced dead link with Archive of page (Intel4004.com)

← Older revision		Revision as of 10:02, 6 January 2022
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	==References==		==References==
	* BYTE Volume 3, number 7, July 1978, "The First Ten Years of Amateur Computing"<br>		* BYTE Volume 3, number 7, July 1978, "The First Ten Years of Amateur Computing"<br>
	* [http://www.intel4004.com www.intel4004.com]		* [http://www.intel4004.com http://web.archive.org/web/20211225184908/http://www.intel4004.com/]
	----		----
	<small>[1]Note that the BYTE article incorrectly states that the chip came in an ''18''-pin DIP.</small>		<small>[1]Note that the BYTE article incorrectly states that the chip came in an ''18''-pin DIP.</small>

	[[Category: Intel Microprocessors]]		[[Category: Intel Microprocessors]]

Jnc: 8008 first

2020-05-24T18:59:35Z

8008 first

← Older revision		Revision as of 18:59, 24 May 2020
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	The '''Intel 4004''' [[microprocessor]] resulted when the Japanese company [http://en.wikipedia.org/wiki/Busicom Busicom] contracted [[Intel]] in 1969 to create a [[integrated circuit\|chip]] set for a [[printer]]-calculator.		The '''Intel 4004''' [[microprocessor]] resulted when the Japanese company [http://en.wikipedia.org/wiki/Busicom Busicom] contracted [[Intel]] in 1969 to create a [[integrated circuit\|chip]] set for a [[printer]]-calculator.

	Busicom permitted Intel to use the chipset design for non-calculator applications (the year this happened was 1971, according to sources). The [[Central Processing Unit\|processor]] chip was called the 4004 and sold for $200. This was the first commercially available microprocessor. It was designed by [http://en.wikipedia.org/wiki/Federico_Faggin Federico Faggin], who in 1974 left Intel and started [[Zilog]].		Busicom eventually permitted Intel to use the chipset design for non-calculator applications (the year this happened was 1971, according to sources). The [[Central Processing Unit\|processor]] chip was called the 4004 and sold for $200. This was the first commercially available microprocessor (although not Intel's first microprocessor design; work had started on what became the [[Intel 8008]] first).. It was designed by [http://en.wikipedia.org/wiki/Federico_Faggin Federico Faggin], who in 1974 left Intel and started [[Zilog]].

	The 4004 (see picture) came in a 16-pin [[Dual Inline Package\|DIP]][1] and had some limitations when compared to later microprocessors. It could only execute code out of erasable [[Read-only memory\|ROM]], [[Random Access Memory\|RAM]] was only used for storing data, and this complicated the life of the [[programmer]] somewhat. The chip also needed a lot of support [[logic]].		The 4004 (see picture) came in a 16-pin [[Dual Inline Package\|DIP]][1] and had some limitations when compared to later microprocessors. It could only [[execute]] code out of erasable [[Read-only memory\|ROM]], [[Random Access Memory\|RAM]] was only used for storing data, and this complicated the life of the [[programmer]] somewhat. The chip also needed a lot of support [[logic]].

	Data and address information were multiplexed on a 4-bit [[bus]]. The need to multiplex the buses was part of the constraints caused by using a 16-pin DIP (40-pin DIPs were already in use by competitors at the time), enforced by Intel's management. Multiplexing reduced the [[instruction]] ~~[[execute\|~~execution]] speed that could have been achieved, for example.		Data and [[address]] information were multiplexed on a 4-bit [[bus]]. The need to multiplex the buses was part of the constraints caused by using a 16-pin DIP (40-pin DIPs were already in use by competitors at the time), enforced by Intel's management. Multiplexing reduced the [[instruction]] execution speed that could have been achieved, for example.

	The 4004 was only the processor part of the chip set produced for Busicom. The original setup was known as 'The 4000 Family', aka 'Busicom Chip Set', aka 'MCS-4 Chip Set' and consisted of:		The 4004 was only the processor part of the chip set produced for Busicom. The original setup was known as 'The 4000 Family', aka 'Busicom Chip Set', aka 'MCS-4 Chip Set' and consisted of:

Jnc: Proper cat, +links

2018-11-03T02:21:15Z

Proper cat, +links

← Older revision		Revision as of 02:21, 3 November 2018
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	[[Image:i4004.jpg\|150px\|thumb\|right\|i4004]]		[[Image:i4004.jpg\|150px\|thumb\|right\|i4004]]

	The Japanese company [http://en.wikipedia.org/wiki/Busicom Busicom] contracted ~~Intel in~~ [[~~1969~~]] to create a ~~chip set for a printer-calculator. Busicom permitted Intel to use the chipset design for non-calculator applications (the year this happened was~~ [[~~1971~~]]~~, according to sources referenced by Wikipedia). The processor chip was called the 4004 and sold~~ for ~~$200. This was the first commercially available microprocessor. It was designed by [http://en.wikipedia.org/wiki/Federico_Faggin Federico Faggin], who in 1974 left Intel and started~~ [[~~Zilog~~]].		The '''Intel 4004''' [[microprocessor]] resulted when the Japanese company [http://en.wikipedia.org/wiki/Busicom Busicom] contracted [[Intel]] in 1969 to create a [[integrated circuit\|chip]] set for a [[printer]]-calculator.

	~~The 4004~~ (~~see picture~~) ~~came in a 16-pin~~ [[~~DIP~~]]~~[1]~~ and ~~had some limitations when compared to later microprocessors~~. It ~~could only execute code out of erasable ROM, RAM~~ was ~~only used for storing data~~, and ~~this complicated the life of the programmer somewhat. The chip also needed a lot of support logic~~.		Busicom permitted Intel to use the chipset design for non-calculator applications (the year this happened was 1971, according to sources). The [[Central Processing Unit\|processor]] chip was called the 4004 and sold for $200. This was the first commercially available microprocessor. It was designed by [http://en.wikipedia.org/wiki/Federico_Faggin Federico Faggin], who in 1974 left Intel and started [[Zilog]].

	Data and address information were multiplexed on a 4-bit bus. The need to multiplex the buses was part of the constraints caused by using a 16-pin DIP (40-pin DIPs were already in use by competitors at the time), enforced by Intel's management. Multiplexing reduced the instruction execution speed that could have been achieved, for example.		The 4004 (see picture) came in a 16-pin [[Dual Inline Package\|DIP]][1] and had some limitations when compared to later microprocessors. It could only execute code out of erasable [[Read-only memory\|ROM]], [[Random Access Memory\|RAM]] was only used for storing data, and this complicated the life of the [[programmer]] somewhat. The chip also needed a lot of support [[logic]].

			Data and address information were multiplexed on a 4-bit [[bus]]. The need to multiplex the buses was part of the constraints caused by using a 16-pin DIP (40-pin DIPs were already in use by competitors at the time), enforced by Intel's management. Multiplexing reduced the [[instruction]] [[execute\|execution]] speed that could have been achieved, for example.

	The 4004 was only the processor part of the chip set produced for Busicom. The original setup was known as 'The 4000 Family', aka 'Busicom Chip Set', aka 'MCS-4 Chip Set' and consisted of:		The 4004 was only the processor part of the chip set produced for Busicom. The original setup was known as 'The 4000 Family', aka 'Busicom Chip Set', aka 'MCS-4 Chip Set' and consisted of:
Line 18:		Line 20:
	----		----
	<small>[1]Note that the BYTE article incorrectly states that the chip came in an ''18''-pin DIP.</small>		<small>[1]Note that the BYTE article incorrectly states that the chip came in an ''18''-pin DIP.</small>
	[[Category:Microprocessors]]
			[[Category: Intel Microprocessors]]

← Older revision		Revision as of 14:01, 14 July 2023
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	The 4004 came in a 16-pin [[Dual Inline Package\|DIP]]<sup>[1]</sup> [[integrated circuit\|chip]], and had limitations when compared to later microprocessors. It could only [[execute]] code out of [[Read-only memory\|ROM]], [[Random Access Memory\|RAM]] was only used for storing data, and this complicated the life of the [[programmer]] somewhat.		The 4004 came in a 16-pin [[Dual Inline Package\|DIP]]<sup>[1]</sup> [[integrated circuit\|chip]], and had limitations when compared to later microprocessors. It could only [[execute]] code out of [[Read-only memory\|ROM]], [[Random Access Memory\|RAM]] was only used for storing data, and this complicated the life of the [[programmer]] somewhat.

	It seems to have limited support for off-chip RAM~~; the~~ 16 4-bit-wide internal [[register]]s seem to be the primary locations for writing data; there is no 'store' [[instruction]]. But the SRC instruction seems to send an [[address]] out, for later used by the Wxx instructions. ~~And~~ the CM-RAM[0123] lines from the [[Central Processing Unit\|processor]] chip are used to control "4002 RAM chips".		It seems to have limited support for off-chip RAM. The 16 4-bit-wide internal [[register]]s seem to be the primary locations for writing data; there is no 'store' [[instruction]]. But the SRC instruction seems to send an [[address]] out, for later used by the Wxx instructions. (Also, the CM-RAM[0123] lines from the [[Central Processing Unit\|processor]] chip are used to control "4002 RAM chips".)

	Data and address information were multiplexed on a 4-bit [[bus]]. The need to multiplex the bus was part of the constraints caused by using a 16-pin DIP (40-pin DIPs were already in use by competitors at the time), enforced by Intel's management. Multiplexing reduced the instruction execution speed that could have been achieved, for example. The chip also needed a lot of support [[logic]].		Data and address information were multiplexed on a 4-bit [[bus]]. The need to multiplex the bus was part of the constraints caused by using a 16-pin DIP (40-pin DIPs were already in use by competitors at the time), enforced by Intel's management. Multiplexing reduced the instruction execution speed that could have been achieved, for example. The chip also needed a lot of support [[logic]].
Line 14:		Line 14:

	* The processor (the 4004)		* The processor (the 4004)
	* 2048-bit ROM with a 4-bit programmable I/O port (the 4001)		* 2048-bit ROM, with a 4-bit programmable I/O port (the 4001)
	* 320-bit RAM arranged in 4 'registers' containing 20 locations of 4-bit 'characters'~~, with~~ a 4-bit output port (the 4002)		* 320-bit RAM arranged in 4 'registers' containing 20 locations of 4-bit 'characters'; also a 4-bit output port (the 4002)
	* A shift register type memory with serial input and parallel output (the 4003)		* A shift register type memory with serial input and parallel output (the 4003)

	<small>[1] Note: The BYTE article incorrectly ~~states~~ that the chip came in an ''18''-pin DIP.</small>		<small>[1] Note: The BYTE article incorrectly stated that the chip came in an ''18''-pin DIP.</small>

	===Width===		===Width===

	The 4004 is often considered a '4-bit' chip, but the discussion is complicated; made even more confusing ~~that~~ there is no universally accepted standard for what sets a machine's 'width'~~; and indeed~~, for most suggested benchmarks, one can find a machine which violates it:		The 4004 is often considered a '4-bit' chip, but the discussion is complicated; made even more confusing because there is no universally accepted standard for what sets a machine's 'width'. Indeed, for most suggested benchmarks, one can find a machine which violates it:

	* [[address space]] ([[KA10]]; 18 bits - 36 bit machine)		* [[address space]] ([[KA10]]; 18 bits - 36 bit machine)
	* instruction size ([[Motorola M68000 family]]; 16 bits - 32 bit machine)		* instruction size ([[Motorola M68000 family]]; 16 bits - 32 bit machine)
	* [[bus]] width ([[Motorola MC68000]]; 16 bits - 32 bit machine)		* bus width ([[Motorola MC68000]]; 16 bits - 32 bit machine)
	* [[arithmetic logic unit\|ALU]] width ([[LSI-11]]; 8 bits - 16 bit machine)		* [[arithmetic logic unit\|ALU]] width ([[LSI-11]]; 8 bits - 16 bit machine)