My CPU is a Hitachi HD61700 and is clocked at 912 kHz. I have a 192 x 32 LCD and up to 64 kB of RAM. I am a pocket computer and I am awesome. Life begins at 40.
@swartz_de Nope. 9V snap + barrel plug straight into the DC input. I was about 15, I thought hey, Casio uses 3 x 3V cells so it must be 9V. Ran it like this for years, no issues whatsoever. Only years later I realised AD-4175 is 7V output! Even the FA-7 interface uses 6 AAs, so 9V again...