Ch 10Digital Electronics — 2nd PUC Electronics, concept-first.

Almost every modern electronic system — a calculator, a mobile phone, a computer, a digital watch — works internally not with smoothly varying voltages but with just two levels, usually written as 1 (…

A logic gate is an electronic circuit that operates on the rules of Boolean algebra to carry out one particular logic function; gates are the basic elements from which every digital system is assemble…

Computers and electronic devices need a systematic, precise way to represent information so that every character, letter, digit and symbol is unique and distinguishable.

Arithmetic logic circuits are logic circuits that carry out arithmetic operations — addition, subtraction and so on — inside a digital computer.

A Boolean expression is the starting point for designing a combinational logic circuit. Before the circuit is built the expression is simplified so that it uses the minimum number of inputs and gates…

Logic circuits fall into two broad families. Combinational logic circuits produce an output that depends only on the input levels present at that same instant, so they keep no record of what came befo…

A register is a group of flip-flops used together to store binary data. Its storage capacity is simply the number of bits (0s and 1s) it can hold, so an (n)-flip-flop register stores (n) bits.

A counter is a logic circuit that counts pulses. It is a set of flip-flops whose combined state advances through a fixed sequence as pulses arrive at its input.

Chapter 10 — Digital Electronics develops digital circuits in two halves. The combinational half (covered in the earlier parts of the chapter) deals with logic gates — including the XOR and XNOR gates…