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O > OPEN UNIVERSITY, UK > Hektor 2   

Hektor 2

Not much is known about this UK single board computer, also called PT-502. It was available only on loan to Open University students. The purpose was to teach electronic and computer engineers students how to conceive and build a microprocessor based system. The system was delivered with a peripheral board and a complete course enabling students to experiment both software and hardware problems.

More info needed about Model 2 and Model 1 (PT-501) systems

Kerry J. Morris reports:
Oh yes, I remember it well..... (H)ome (E)lectronic (K)it compu(TOR) (!) or something similar.
I used one myself, as a part of my OU (Open University) studies c. 1986, for the course 'TM222 - The Digital Computer'. I think they must have originally been developed around 1981.
A bit clunky, I recall, but a great way of learning about microprocessor-based systems. In fact, I continued to use the HEKTOR user manual as a convenient and well written 8085 assembly language reference for about 10 years afterwards!
I seem to remember that a few years ago, when the OU revised the courses which used HEKTOR, and wanted to replace the (by then) ageing technology, they gave students the opportunity to buy a HEKTOR system for a minimal sum (but I can't recall exactly how much).
Since they were only for use with a few specialised OU courses, and were loaned to the students for the duration of the course, they are probably a bit of a rarity (at least compared to some systems), with perhaps no more than a few thousand ever made?

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.
Please consider donating your old computer / videogame system to or one of our partners from anywhere in the world (Europe, America, Asia, etc.).


If you have a working Hektor for sale, contact me at my email

Thanks a lot!


Saturday 27th August 2016

I''m just about to list an original HECTOR on Ebay (uk) if anyone is interested.
See listing $586462769322 later today.

Wednesday 11th May 2016
peabody_pearce (Loughborough)

Hi keira hope-thompson (london), I am interested in this kit. And The OU- Working with Hektor brochures (parts:6,7,8). How can I contact you?

Wednesday 17th October 2012
Artur K(London) (London/UK)


NAME  Hektor 2
MANUFACTURER  Open University, UK
TYPE  Home Computer
ORIGIN  United Kingdom
YEAR  ? 1981
BUILT IN LANGUAGE  8085 Assembler, monitor
KEYBOARD  Full-stroke 60 keys
CPU  8085
SPEED  3.024 MHz (using a 6.048 MHz crystal)
TEXT MODES  16 lines of 64 characters
GRAPHIC MODES  Character graphics only
COLORS  Monochrome
SOUND  Simple tone facility, played through TV speaker
SIZE / WEIGHT  30.5(W) x 26(D) cm. (mother board only)
I/O PORTS  TV/RF output, composite video, cassette port, 40-pin interface for external peripheral board
OS  Proprietary, including monitor, editor and 8085 assembler
PERIPHERALS  Expansion board
PRICE  Unknown, available only on loan to Open University students

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