Actually, is it possible to use an USB/serial converter to program these Atmel chips
Yes, if you first burn the bootloader.
If you are looking for cheaper AVR's take a look at fx.: Attiny85
Actually, is it possible to use an USB/serial converter to program these Atmel chips
Yes, if you first burn the bootloader.
If you are looking for cheaper AVR's take a look at fx.: Attiny85