1. The face of entertainment and communications.
Transistor Radio
The face of entertainment and communications.

2. The creators
The inventors of the transistor in 1948: William Shockley (seated), John Bardeen, and Walter Brattain. Don't let the smiles fool you. They fought over who got credit. Since the 1930s, Bell Labs had been looking to replace tubes with an electronic switch

3. Regency TR-1
The original transistor radio.

4. Vacum Tube Radio
The original two-prong radio. That had vacuum tube amplifier.

5. The New
The new radio was more compact, and accessible.

6. The tube vs. the prong
The tube on the original radio, and the prongs that powered the TR-1.

7. The Result