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cyber journey

#logic-gates

4 entries across collections.

Code: Relays and Gates

Code ch. 8 — building AND, OR, NOT, NAND and NOR gates from relays, truth tables, gate symbols and De Morgan's laws.

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Code: Adding with Logic Gates

Code ch. 14 — binary addition, XOR, the half adder and full adder, chaining them into an 8-bit ripple-carry adder, and overflow.

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Code: Feedback and Flip-Flops

Code ch. 17 — feeding outputs back to inputs: the oscillator (a clock), R-S flip-flops, D latches, edge-triggered flip-flops, dividers and counters.

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Code: Let's Build a Clock!

Code ch. 18 — a digital clock from counters: binary-coded decimal, dividing a fast oscillator down to 1 Hz, and driving seven-segment displays.

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