We Built Our Own Computers

actual adder addition analogue computer answer applied approximation beads binary calculating unit carry chapter circuit column combinations complete compound statement condition connected consider constructed contains corresponding depends described determines digit drum electrical equation example false final flow diagram Full given gives heap input instruction involved lamp lights logical logical connective loop machine main bus matchbox means method move multiplication negative nought object obtained ohms operation output perform play Player polarity position possible potential Print problem produce R₁ relay coil reply representing resistors result shown in Figure shows simple simple statements solution square stage storage unit Suppose switch symbolic logic taken terminal third true truth table turn variables weight wire write