It SHOULD be a Heathkit Computer System

This is another advert from The Heath Company of Benton Harbour, Michigan - and which traded as Heathkit - for a variety of its micros and peripherals of the day. 

It's also nice for a change that the advert actually shows the various components in an office setting, so there's more of a sense of scale.

This included the 8-bit 8080A-based H8 - as seen above, with the buttons and lights on - which could be programmed directly, if tediously, without even needing a keyboard or monitor.

There's also mention of the company's H11 - a 16-bit machine which was essentially DEC's famous PDP-11, but on a single chip - the LSI-11/2. 

DEC's range of PDP minicomputers was one of the most popular from the 1960s up to the end of the 1980s, until improving microcomputers rendered the idea of large high-performance computers dedicated to serving multiple users obsolete.

