For sake of argument since I'm an EE, electronics do not equal computers, but computers require electronics to function. Radios don't require a computer to operate, and are very simple circuits to build. They just need a few operational amplifiers, capacitors, resistors, inductors, some switches (to tune the modulation/demodulation), oscillating crystal and (and power). They're really is no general purpose programming (or memory) going on in a radio or other very fixed purpose electronic devices. Computers are more "higher" form of electronics if you want to look at it that way, because they can be programmed to almost "think" and "reason".