Linked by Thom Holwerda on Sat 29th Nov 2008 00:43 UTC
Hardware, Embedded Systems El Reg has a write-up on the amazingly beautiful and hopelessly impractical Honeywell Kitchen Computer. We've covered this bizarre piece of computing history before on OSNews, in my list of the ten most beautiful computers. For those that have no idea what I'm talking about, read on for more details. Trust me, you want to know.
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RE: 0.6MHz likely
by JLF65 on Sat 29th Nov 2008 06:40 UTC in reply to "0.6MHz likely"
JLF65
Member since:
2005-07-06

"It was powered by a 0.6-2.5Mhz processor (reports are inconclusive)

The 1.6 microsecond memory timing referenced in the brochure suggests the 0.6MHz figure. (1.6µs translates to 625KHz) Remember, no cache. If it did run at 2.5MHz, it ran at an *effective* 0.6MHz.

Adequate for most 1960s kitchen computing workloads. The complimentary programming course and bundled Shish-kabuntu were a nice touch, too.
"

Note that 625 kHz x 4 = 2.5 MHz. Many CPUs used to require multiple clock cycles to execute instructions. That was the difference between a clock cycle and a machine cycle.

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