Nascom/Lucas Advert - June 1978

Nascom, the computer company which was eventually acquired by car-parts maker Lucas was, for a while, the UK's biggest supplier of computer kits.

It was established by Lynx Electronics - the hobbyist subsidiary of North American Semiconductor, which was known as Nasco in the UK.

NAS's UK chairman, John A Marshall, was frequently in the US and spent time visiting amateur clubs on the west coast and so was able to experience first-hand the extent to which computer clubs and microcomputing were developing.

Back in the UK though there was a feeling that the hobbyist had been "left out in the cold", and addressing this was the reason that the Nascom 1 was developed - with the aim to "produce an advanced-technology kit and put it within the UK mass-purchasing budget".

It was also hoped that with the right hardware, set at the right price that the British amateur was ready to buy, there would be sufficient users to warrant starting an officially-supported Nascom users' club. Kerr Borland, Nascom's head of marketing, suggested in the very first edition of Personal Computer World in February 1978 that:

"As well as being ideal for the amateur it would solve many educational problems by creating a low-cost microcomputer. This would open up computer clubs in colleges all over Britain and the Continent".

The project, which had started in the summer of 1977, contracted out the design of the Nascom to Shelton Instruments, specialists in microprocessor-based control eqipment.

Shelton chose to base the micro around Zilog's Z80 - in this case a version second-sourced by Mostek - as it was considered as a "third generation" CPU, was easy to learn, had a lot of software available and was rapidly becoming a popular CPU in the wider market.

The basic micro shipped with just 2K of RAM, in the form of eight 256-bit static RAM chips - and 1K of that was needed to hold the character map for video output - but it could support up to 32K.

A schematic of the Nascom 1, from the first edition of Personal Computer World, February 1978

Whilst prototypes had been shown at the Home Microcomputer Symposium, held in the Wembley Conference Centre on the 26th November 1977^[1] - some four months after the project started - the finished Nascom was officially launched in February 1978, with initial signs being that the project as "a complete success". However it was still not a given that the microcomputer would do well, with Borland suggesting:

"for all the enthusiams that Lynx people have, this is still entirely in the hands of the UK hobbyist. By March 1978 hobbyists will have kits spread throughout the UK and could by the end of 1978 number in thousands^[2]".

That predicition turned out to be on the low side as by the summer of 1978 Nascom was claiming to have already shifted nearly 10,000 units, and at the end of 1979 it was even beating Sinclair's MK-14 and Acorn's System 1^[3].

During 1979 the company had been finding it hard to raise money to fund expansion, so caused some excitement in the industry when it became the recipients of some new UK corporate and government finance, including a £500,000 (around £3,222,600 in 2024 terms) investment from Eagle Star subsidiary Grovewood Securities^[4].

An Amperex 9" TV tube from a Commodore PET 3008The Nascom 1 was considered fairly unusual for a kit in that it provided both a keyboard and a video interface, at a time when most kits used LED displays and had only hexadecimal keypads or even switches as an interface.

Stick the Nascom 1 on a television and it was pretty much a complete computer, albeit one without a case.

Although the first wave of modern personal micros had been launched the year before, kit computers were still popular as they were a lot cheaper.

Besides, the built-in monitor of the £540 (£3,760) Commodore PET - the first of the new machines to be announced and shown in 1977 - was really only a glorified television as it used 9" Sanyo, Sony or Amperex TV tubes.

In another departure from many of its contemporaries, the Nascom didn't use the almost-industry-standard S-100 bus, as popularised by the Altair 8800 and IMSAI 8080, but instead went with its own 77-pin Nasbus.

An advert for Nascom's new Nasbus 32K memory card and expansion frame, Vero. From Personal Computer World, October 1978

As well as a 32K Nasbus memory board - comprising 16 empty memory sockets and a 2K Tiny BASIC - Nascom was also offering its own expansion "frame" to host its cards. Called Vero, it could support "eight or more expansion boards".

When released in 1978, the Nascom 1, with monochrome video output, retailed for £213 (about £1,480 in 2024 money), which was just over the £200 sweet-spot the company had been aiming for.

However, Nascom was promising PAL colour output for both the Nascom 1 (and the later Nascom 2) by the begining of 1980.

Kerr Borland stated that the ultimate aim was to produce a kit with "most of the features that set the Apple II apart" for around £550 (£3,540 in 2024 money).

It wasn't all plain sailing though, as there were many "touch and go" delays caused by higher-than-expected sales at a time of tight company finances, as well as a threatened lawsuit between Nascom and software company Mine of Information (MoI).

MoI had planned to develop software for the Nascom, but supply delays together with an unlucky decision to pick the 8K model, "which never quite got debugged" according to Personal Computer World, meant that the company had to abandon its plans^[5].

Luckily for Nascom, apart from some Sabre-rattling, the lawsuit seemed to fizzle out^[6].

The first edition of Personal Computer World, with the Nascom 1 starring on the cover. February 1978

The Dawn of Personal Computer World

The Nascom 1 also left an indelible mark on the computer magazine industry as it was said to have partly inspired Angelo Zgorolec - a Croatian running a newsagent's business in London - to launch his own computer magazine: Personal Computer World.

In order to first gauge potential demand, Zgorolec flew over to New York to visit the Personal Computer Expo, sponsored by US computer magazine Byte and held in the Coliseum between the 28th and 30th of October 1977^[7].

As soon as he got there he immediately realised that the two hour queues to get in were all he needed to know about the popularity of the new industry.

Upon returning to the UK, Zgorolec set up a distribution deal and then persuaded his friend Meyer Solomon to become the new magazine's editor, with the first issue - in February 1978 - being neatly timed to coincide with the launch of the Nascom 1, which was also the first edition's cover star^[8].

The success of the Nascom possibly helped Personal Computer World to sell out its first print run of 30,000 copies. The second edition was published in May 1978, with the magazine going monthly from its third edition in July^[9].

Personal Computer World continued via various changes in style and editor until 2009, when competition with websites like Anandtech and Tom's Hardware, as well as magazine competition from titles like Computer Shopper - plus perhaps the boredom factor of constant benchtests of generic almost-identical IBM PCs - meant the end of road.

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The Register has an excellent in-depth article on Dr. Chris Shelton, the designer of the Nascom 1.