A veteran’s introduction to boolean algebra

I recall being introduced to Boolean algebra 42 years ago when I was 18. I was an airman in the United States Air Force, stationed at Keesler Air Force Base and studying to become a Radio Relay Equipment Repairman. It was the module on Voice Frequency Carrier Terminals, or VFCTs, that I was first introduced to this area of mathematics that was used extensively in the area of telecommunication electronics that I…