In which decade was the transistor invented?
- A. 1940s
- B. 1950s
- C. 1960s
- D. 1980s
Correct Answer: A. 1940s
On December 23, 1947, The first practically implemented device was a point-contact transistor invented in 1947 by William Shockley, Walter Brattain, and John Bardeen, of Bell Labs, announced their discovery of the point-contact germanium transistor to management.
Correct Answer: C. 1642
Correct Answer: D. Oder‐Neisse Line
The Germany–Poland border established after world war II is called Oder–Neisse line. It has a total length of 467 km (290 mi) and has been in place since 1945.
Correct Answer: A. Wales
Correct Answer: D. UK
Downing Street famous for the official residence of British prime minister. It was named after Sir George Downing (died in 1684), a diplomat under Cromwell and King Charles II.
Correct Answer: D. England
Correct Answer: A. Wood Buffalo Canada