Micro-Professor MPF-I

Microprofessor I ( MPF 1) is a single-board computer, which was launched in 1981. The computer was by the Taiwanese company Multitech (now Acer ) were prepared. He is probably one of the longest selling computers that have not changed since the start of sales. The MPF I was an easy to use training system for the Z80 microprocessor from Zilog with a clock frequency of 1.79 MHz. The computer was (expandable to 8 KB) equipped with a RAM of 2 KB (expandable to 4 KB) and a ROM of 2 KB. Successor of the computer were the Microprofessor Ib ( which possessed in addition a BASIC ROM and an alternative to assembly language programming in this high-level language allowed ), Micro Professor II and III Microprofessor.

To date, the computer of Flite Electronics International is manufactured and sold.

  • I / O Port: PIO (Programmable Input / Output) port 8255, a total of 24 parallel I / O lines
  • I / O Address: 00-03. PIO, total 16 parallel I / O lines
  • I / O Address: 80- 83h Programmable CTC ( timer unit), total running time 4 independent controls
  • I / O Address: 40 - 43h
  • Display: 6 Digit 1.7 cm 7 - segment red LED display
  • Keyboard: 36 keys, including 19 function keys, 16 hexadecimal keys and a programmable key.
  • Speaker: Built-in. Diameter 57 mm. Approx. 200-10000 Hz.
  • Expansion area: On the circuit board 8.9 x 3.5 cm area are provided for any extension.
  • Tape interface: Connection options for any tape devices. Data rate 165 bit / s
  • System frequency: 3.58MHz quartz, 1:2 divider, pulse duration about 0.56 microseconds.

Expansion options

For the MPF -I numerous expansion boards and chips were available:

  • MPF -BASIC
  • Voice output for English words and numbers
  • EPROM program unit, Writing Instrument
  • LEDs and stepper motor output board
  • VHS output board for the TV
  • The rare Swiss Elepra additional board for automation tasks

Successor

Intel 8255
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