Digital Logic for GATE

Digital Logic questions are among the fastest in the core section because each is self-contained: nothing depends on a long chain of earlier reasoning. Number representation is the chapter that quietly decides several marks elsewhere too, since two's complement overflow and floating-point rounding reappear in Computer Organization. Boolean minimisation is a covering problem, and recognising it as such is what prevents the common error of stopping at a locally small expression. Combinational circuit questions always reduce to a truth table, however the circuit is drawn, and sequential circuit questions reduce to asking what history the state bits must remember. Attempt this subject early in the paper while your arithmetic is still careful.