EAI Pace TR-20, an all-transistorized desktop analog computer developed by Electronic Associates, Inc. in the mid-1960s for scientific and engineering calculations. The unit measures 15˝ x 27˝ x 16˝, and weighs approximately 102 lbs. It boasts a colorful plugboard, built-in voltmeter readout, and various switches and potentiometers. Untested and in very good to fine cosmetic condition. Accompanied by a TR-10 operator's handbook.
EAI's sales literature describes the TR-20: 'Though compact in size it is a full fledged computer, capable of solving many complex problems previously requiring scheduling on large computing systems. It offers up to 20 amplifiers plus components for addition, subtraction, multiplication, division, integration and generation of powers, roots, logs, antilogs, sine, cosine and arbitrary functions—in one cabinet, and available to one patch panel.
The TR-20 is useful in solving problems in such diverse areas as servo-system design, heat flow, chemical reaction analyses, suspension systems studies and many other problems involving dynamic conditions.
With a TR-20 analog computer an engineer can explore problems as they occur with instantaneous visual readout—determining the feasibility of projects immediately—without leaving the desk.
Simply turn a dial to feed in parameters, and the computer provides an instant, dynamic picture of the effect of each change. The endless drudgery of step-by-step calculation is eliminated—engineering data becomes alive.'
