Akela, my female German Shepherd Dog, shown here at 10 months old. This is Brutus, my black Alsatian who sadly passed away at the age of 10. He lived in South Africa in a city by the sea, which was ironic since he hated water. He was a wonderful, intelligent and kind friend who will be sorely missed.
Sony, who is often credited with developing the first portable radio, didn't come out with theirs until 1957. Don Pies Regency TR1 Website/via. It didn't take long for transistors to take over and for them to shrink down to integrated circuits to the point where you can now get an entire Radio Shack in an iPhone. It all started 60 years ago with this.
The bipolar transistor was invented in 1947. From 1955 onwards transistors replaced vacuum tubes in computer designs, giving rise to the second generation of computers. Compared to vacuum tubes, transistors have many advantages: they are smaller, and require less power than vacuum tubes, so give off less heat.