The main objective of the book is to bring out broad outlines of different types of Signed digit number system. It presents the information about the basics principles and performance of various Signed digit number system. The concept of redundant arithmetic is introduced, with the help of which we can eliminate the carry propagation chain and due to which the speed of addition operation can be increased. Also various digital adders have been designed and comparative study between them is done. With the help of adders we can realize any digital circuits. In Adder, the carry propagation...