This was a mass-produced calculator from HK, known as the Standard Type 1. Our example bears the name "Academy" though many other names were also carried too including "King Sonic", "Mustang 3000" and "Binatone"! All were the same calculator, manufactured in the late 1970s. The calculator is similar internally and functionally to the Texet 880A.
The calculator is powered by a Texas TMS0972NL and has the basic arithmetic functions, percentages and a memory. The display has eight digits and uses red LEDs.
