Posted on Feb 6, 2014

The gap between TTL graves and the PC can be perfectly filled with modern microcontrollers. They not only contain the CPU but also program and data memory, EEPROM, I/O ports, timers, some even ADC and UART. With that you have a complete little computer system on one chip. Advantageous is the low power consumption and the small amount of space need

Click here to download the full size of the above Circuit.

ed. Modern chips have a flash program memory so they could be programmed directly in the target system without any efforts. I started with a MicroChip PIC16F84 until the 1k program memory and the data memory became too small. Now I`m working with the Atmel AT90S4433, which has 4k program, 256B data and 128B EEPROM memory. A/D Converter and UART are already built in.

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