Identifying Components Inside Electronic Calculators
Many of the components inside electronic calculators of the 1960s and 1970s are much different to the highly integrated, miniature, surface-mount components inside modern electronic products.
Here are some photographs to help identify what we might find inside a vintage calculator.
Hand-held calculator from early 1970s
Below is the circuit board of the apf Mark III hand-held calculator, shown on the right, with component types marked.
There is a key to those component types underneath.
© Text & photographs copyright Nigel Tout 2000-2022 except where noted otherwise.