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Donn Stewart
13917 Deviar Dr
Centreville, VA 20120

Designing, Building, and Selling Obsolete Computers -- for Educational Purposes -- since 2004

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Register Display

photo of register display

Not much to say about this. It is simply LED's with built-in current limiting resistors, connected by way of buffers to the register outputs. It is not needed for proper operation of the computer, but it is critical in the troubleshooting phase. The display is also pleasing to watch when the computer is running. With a slow clock, it is easy to follow what the computer is doing.

Links to Original CPU pages:

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