List of materials

This is a non-exhaustive list of materials that are used in the construction of the TTL computer.

ICs

All 7400 series ICs, DIP package

x33 7408 (quad 2-input AND)
x10 7400 (quad 2-input NAND)
x14 7432 (quad 2-input OR)
x1 7486 (quad 2-input XOR)
x3 7421 (dual 4-input AND)
x2 74283 (4-bit binary full adder)
x1 7411 (triple 3-input AND)
x1 7436 (quad 2-input XOR)
x2 744072 (dual 4 input OR)
x2 747266 (quad 2-input XNOR, low availability, so could be replaced with 7436 (quad 2-input XOR) and 7400 (quad 2-input NAND, with inputs shorted))

x3 64B x 8 SRAM chips (program memory)
x1 256B x 4 SRAM chip (general use memory)
x4 4B SRAM chips (registers), probably constructed manually from 7474 (dual D flip-flop) chips, eight of them which would be used to make the four registers

x1 556 (dual timer, one of which offset by 1/2 period, to operate the TTL_PC CLK and GO signals respectively)
Somewhere in the order of 500 wires, for breadboarding
x24 switches, for input (some of which could be replaced with the 556 timer, but would still be present for manual input)
x53 LEDS (4 for each register, 20 for current instruction, 8 for current memory address, 5 for ALU output, 4 for selected register, and possibly more for debugging)
A series of large breadboards, for construction