KiCad schematics ut88

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Main components

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Part NumberDescription
580ВМ808-bit N-channel Microprocessor, DIP-40
580ГФ248224 Clock Generator for 8080 CPU
K176ИЕ515-stage Binary Ripple Counter with Oscillator
580ИР828-bit latch
155ИД34 to 16 lines Decoder/Demultiplexer
27C020OTP EPROM 2 MiBit (256 Ki x 8 Bit)
HM628128128K-word x 8-bit High-Speed CMOS Static RAM, 70/85/100/120ns, 5V supply, DIP-32/SOP-32
KR556РТ4
K155ЛА8quad 2-input NAND gate, open collector outputs NRND
K155ИД4Dual 2 to 4 lines Decoder/Demultiplexer
K155ЛЕ4Triple 3-input NOR
K555ИР264 x 4 Register Files 3-State Outputs
K155ЛН1Hex Inverter
K155ИЕ5Divide by 2 & 8 counter
K155ТМ2Dual D Flip-flop, Set & Reset
K155ЛЛ1Quad 2-input OR

kicad schematic

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kicad board layout

kicad PCB render

Top PCB
Bottom PCB