|
 Introduced
in 1972, the 8008 was at heart just an update of the 4004 with
more bits in each register. It used the same technology (which meant the
smallest features etched onto the silicon chip measured 10 microns across)
and ran a bit faster (200 kHz), but broke no new ground. Overall, the 8008
was an interesting and workable chip, and it found application in some
initial stabs at building personal computers. Now, however, it’s only a
footnote in the history of the PC.
|
Developer
|
Intel Corporation
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Number of
transistors
|
3450
|
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Register width
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8 bits
|
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Data bus width
|
8 bits
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Cache bus width
|
None
|
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Address bus width
|
14 bits (multiplexed)
|
|
Addressable memory
|
16K bytes
|
|
Floating point unit
|
None
|
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Primary cache size
|
None
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|
Secondary cache size
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None
|
The
8008 was able to perform calculations more than three times faster than its
Intel predecessor because of a combination of a higher clock speed (200KHz
versus 108KHz) and its wider registers.
|
Clock speed (MHz)
|
|
0.2
|
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Date introduced
|
|
April, 1972
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Power consumption
|
|
|
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Operating voltage
|
|
5.0
|
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Design rules
|
|
10.0 microns
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Performance
|
|
|
|
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Estimated MIPs
|
0.06
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