Transistor radio
device · 1954 · Digital age
A pocket receiver (Regency TR-1).
What it is made of
- Transistor — has part. Transistors instead of vacuum tubes.
- Dry cell — has part. Batteries.
- Loudspeaker — has part. A loudspeaker.
Principles and materials it uses
- Plastic — is made of. The case is plastic.
What it is a kind of
- Radio — is a kind of. A radio receiver.