- COP842C
- National Semiconductor
- 8-Bit CMOS ROM Based Microcontroller
- COP842CJ
- National Semiconductor
- 8-Bit CMOS ROM Based Microcontrollers with 1k or 2k Memory, Comparator and Brown Out Detector
- COP842CJ-XXX/M
- National Semiconductor
- 8-Bit MCU, CISC, ROM, COP8 Family
- COP842CJ-XXX/N
- National Semiconductor
- 8-Bit MCU, CISC, ROM, COP8 Family
- COP842CMHD-1
- National Semiconductor
- Microcontroller Emulator
- COP842CMHD-2
- National Semiconductor
- Microcontroller Emulator
- COP842CMHD-3
- National Semiconductor
- Microcontroller Emulator
- COP842C-N
- National Semiconductor
- 2.5 V to 6.0 V, single-chip microCMOS microcontroller
- COP842C-XXX/N
- National Semiconductor
- 8-Bit MCU, CISC, ROM, COP8 Family
- COP842C-XXX/WM
- National Semiconductor
- 8-Bit MCU, CISC, ROM, COP8 Family
- OP842
- Optek Technology, Inc.
- NPN silicon phototransistor.
- OP842W
- Optek Technology, Inc.
- NPN silicon phototransistor.