MPF-1B/1P

above (MPF-1B) and below the (MPF-1P)

 

The MPF-1B was the original Micro-Professor format using a HEX keypad for inputting machine code and a 6-character 7-segment LED display, it was shortly followed by the MPF-1P with a QWERTY keyboard and a 20-character 14-segment fluorescent display.