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The total cost of equipment used to build the test unit in this study was approximately $5,000, Hua noted, mainly including the vehicle for $4,500, the heater for $200 and microcomputers for $100.

In a first for the microcomputer maker, the Pico is powered by a custom chip designed in house called the RP2040.

Schlueter removed the pneumatic relays and the bundle of wires and replaced them with a purpose-built microcomputer and a few slim Ethernet cables.

When Bill Gates was a lad, for example, he wrote a Basic interpreter for one of the earliest microcomputers, the TRS-80.

“In the 1980s and 90s young designers grappled with coding on the new microcomputers and set the template for the industry with iconic games. We celebrate some of their landmark creations on stamps.”