7-segment display driver (CB20551E)

We found this circuit in English documentation from 1996 for PCs. The circuit is for common cathode display.

BD42x LDO Regulators for Automotive and Industrial Use
June 2017 - The new ROHM Low Dropout Voltage Regulators (LDOs) for 3.3 V or 5.0 V high accuracy...
Pulse Width Linear Modulator (CB3987E)
This circuit is from an old Mullard (Philips) documentation on the 555. The circuit uses a pair of...
Simpson 250 Multimeter (CB1401E )
This was a very popular instrument in the workshops of the 60s and 70s. It was a "top of the line"...