This book first gives an introduction to electronic circuits: various electronic components,basic FET construction and operation. Then discusses structure of combinational logic circuits and logic minimization, introduces several combinational circuits that are frequently used by digital designers, including a data selector, a binary decoder, an encoder,and a shifter, also discusses several combinational circuits that perform arithmetic operations on binary numbers, including adders, multipliers, and comparators. Finally,introduces the concept of electronic memory and the founding concepts used in the design of sequential circuits.