The IBM 1620 Electronic Circuit Analysis Program (known as ECAP) is an integrated system of programs which can be used by the electrical engineer in the design and analysis of electronic circuits. The system of programs can produce DC, AC, and/or transient analyses of electrical networks from a description of the connections of the network (the
circuit topology), a list of corresponding circuit element values, a selection of the type of analysis desired, a description of the circuit excitation, and a list of the output desired. The engineer requires neither a knowledge of the internal construction of the system of programs nor computer programming techniques to use ECAP effectively.
This publication describes the rules to be observed in the use of ECAP and contains a large number of examples which illustrate many of the features of ECAP.