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DC504: Difference between revisions
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(moved DC504A to its own page - large differences in specs and interface) |
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* 16A − Signal input (GND on 17A) | * 16A − Signal input (GND on 17A) | ||
* 14A − External Clock (GND on 15A) | * 14A − External Clock (GND on 15A) | ||
==Internals== | |||
The DC504 uses a [[Media:Mostek MK5009P.pdf|Mostek MK5009P]] PMOS oscillator/counter IC to control gate times. | |||
The first counter stage is a [[Media:Signetics 82S90.pdf|Signetics 82S90]] 85(100) MHz decade counter, followed by four 7490 decade counters, 7475 latches, and 7401s to multiplex the output/display. | |||
==Pictures== | ==Pictures== | ||