155-0119-00
The Tektronix 155-0119-00 (M123A) is a Tek-made 5-digit BCD counter and multiplexer chip in a 40-pin CERDIP, desigend by Dave Allstot.
It provides a multiplexed BCD output with decoded digit lines from four 4-bit BCD inputs (for the most significant digits i.e. higher frequency divider stages) and its five internal counter stages.
Used in
- DC508A (A1U1330)