Things are tough right now ...

They're tough for everyone :( But when coronavirus hit here in the UK, the museum had to close its doors to the public, and we lost practically all our income overnight.

Please Donate Via Just GivingNo visitors, no workshops, no events, no school visits... no income. We know that things are tough for everyone right now, but if you can afford to help us through these tough times please donate what you can.

There's over 36,000 exhibits here! That should keep you occupied for a bit - get searching!

Or come and get involved on our social media channels ...

      Twitch  Facebook          Online Gift Shop      

Thank you.

Lan-Alog Type LA-4

The Lan-Alog computer was designed to teach analogue computing techniques to students in mathematics, engineering, and applied sciences. The computer contains four encapsulated operational amplifiers, employing silicon epitaxial transistors and a voltmeter. The various components can be connected in a variety of ways using patch cords.

The amplifier fitted in the Lan-Alog LA-4 has an open-loop gain of 50,000, ensuring a basic computing accuracy of better than 1% per amplifier. The overall accuracy of computation also depends on the quality of the resistors and capacitors used - the Lan-Alog manual claims better than +/-3% in all conditions.

All components are mounted on a steel panel, measuring 19 x 10.5 inches and the panel is drilled such that it may be fixed vertically on a standard 19-inch rack.

Our example has the Analog Computer Handbook and a 5 pin DIN type power connector to link unit to unit.

Manufacturer: Lan-Electronics Ltd
Date: August 1968

Comment on This Page

This exhibit has a reference ID of CH35971. Please quote this reference ID in any communication with the Centre for Computing History.


Lan-Alog Type LA-4

Click on the Image(s) For Detail


Help support the museum by buying from the museum shop

View all items

Founding Sponsors
redgate Google ARM Real VNC Microsoft Research
Heritage Lottery Funded
Heritage Lottery Fund
Accredited Museum