Brian Roemmele on Twitter: "The first transistor calculator released today in 1954 is the IBM 608 Transistor Calculator contained ~3,000 germanium transistors on boards https://t.co/gm4B4g1frL" / Twitter
My 4-bit electronic binary calculator using transistors and how I came about building it : r/ECE
Calculator res for pc817 and transistor 2n2222a - General Electronics - Arduino Forum
Calculating Transistor as a Switch | Homemade Circuit Projects
Transistor Amplifier Calculator
Transistor Base Current Calculator - Calculator Academy