What is it?

The 8080 single-board computer can run assembly programs, read buttons, display digital tubes, and connect to the 1602 LCD screen that displays the 8080 bus. Board size: 16x10cm, single 5V 1A power supply/8-12V 1A power supply (added soldering LDO)

The CPU is INTEL's 8080, an 8-bit NMOS processor containing about 4,500 transistors. The 8080 is the first large-scale commercial 8-bit processor after the 8008 processor, laying a certain foundation for the 8086 and X86 architectures. Base. (Three-way power supply: +5V, +12V, -5V, with built-in voltage transmission circuit on the board) CPU: INTEL-D8080A/AMD-AM9080A (all ceramic packages) Clock chip: upb8224 (power supply +5V and +12V) Bus driver control: AMD8228/P8228 (power supply +5V, INTA connected +12V through resistor)

ROM: 27C256 32KB RAM: HM62256 32KB

GPIO: 74HC573, 541 Display part; LED, digital tube, LCD1602

The hardware UART uses an 11.0592M crystal oscillator to divide the frequency by 144 and input it to the MC6850 serial port chip, which can perform serial communication at 76800, 4800, and 1200 baud rates.

In addition, an optional audio generator function has been added. The chip uses Texas Instruments' SN76489 audio signal generator, which is one of the earliest music generator chips in the world. The clock input is standard 3.57945MHz, and the address is allocated in the IO space.

Two EPROM programs can be burned before shipment. After that, the buyer needs to prepare their own EPROM programming and UV erasing equipment, and provide schematic diagram and light test program. There is no complete program. Power supply not included.

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