Donn Steward CPUville 8-bit 사용 설명서 - 페이지 13

{카테고리_이름} Donn Steward CPUville 8-bit에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. Donn Steward CPUville 8-bit 14 페이지. Processor register display kit

Register Display Schematic

The register display is simple. The register outputs and processor flags are brought to the inputs of the

74LS240 inverting buffers from the main board through the display connector. The state and system

clock signals are brought in from the control board through the 16-pin front panel connector. The LEDs

are connected to the buffer outputs so that the buffer "sinks" current from the LED, causing it to light

when the buffer input is +5V (a logical 1). The pushbuttons and clock and reset switches are connected

to their respective circuits on the control board through the front panel connector. The bypass

capacitors filter out power line voltage spikes.