Microcircuits KM1008VZH2 represent an electronic dialer for push-button telephone sets with memory and pulse dialing. The ICs perform the following functions: dialing the phone number of any value, storing in the internal RAM with a capacity of 24 x 4 bits (24 digits) and repeating the last dialed number with the number of characters not exceeding 24, interrupting the dial while it is running and replaying, off in the PBX line with the simultaneous pressing of two or more buttons, programming the frequency of the encoder pulse, pulse ratio and inter-digital pause. They contain 5046 integral elements.