Robert Zieliński
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logic
logic
2026-08-09
Decade counter driving a seven-segment display
includes a live simulator
2026-08-09
A four-bit shift register, one bit per clock
includes a live simulator
2026-08-09
Eight words of RAM, from NAND gates and tri-state buffers
includes a live simulator
2026-08-09
A one-bit ALU: AND, OR, XOR and ADD on a two-bit opcode
includes a live simulator
includes tables
2026-08-09
Program counter, memory and accumulator — the fetch cycle
includes a live simulator
2026-08-09
Two-bit binary adder, built from NAND gates
includes a live simulator
2026-08-08
Digital logic — from NAND to a computer
includes a live simulator
includes tables