He founded Micro Instrumentation and Telemetry Systems (MITS) in 1970 to sell electronics kits to model rocketry hobbyists, but the first successful product was an electronic calculator kit that was featured on the cover of the November 1971 issue of Popular Electronics.
Ia mendirikan Micro Instrumentation and Telemetry Systems (MITS) tahun 1970 untuk menjual peralatan elektronik ke para penggemar roket model, namun produk pertamanya yang sukses adalah peralatan kalkulator elektronik yang muncul di sampul Popular Electronics edisi November 1971.