Fm Address Decoder B199

Summary This document is an engineering schematic for a Digital Equipment Corporation (DEC) FM Address Decoder (B199). The circuit diagram illustrates a series of eight integrated circuits (E1 through E8), identified as either Texas Instrument SN7440N or Fairchild U6A900959X logic gates. The schematic shows the signal flow, common connections for capacitors and resistors, and the distribution of input signals (labeled 00 through 17) across the decoder logic. Technical specifications noted on the page include a standard capacitor value of .01 MFD and a resistor value of 1,500 ohms (1/4 W; 5%).