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1. Personal computers: Apple Macintosh (1984), IBM PC 5150 (1981), ACER 710 (1987 in Taiwan).
2. Central processing unit (CPU): Intel 8088 CPU, microcomputer CPU for Arduino – Atmega328p.
3. CPU commands: RISC or CISC.
4. Computer peripherals: power supply, power supply connectors, static or dynamic random memories (SRAM or DRAM), mother boards, computer ports (parallel ports, serial ports, RJ45 ports, Bluetooth COM Port, WIreless-FIdelity (Wi-Fi) port).

References for ICs (chips) of voltage regulators: LM7805, LM7810, LM7812