Crash Course Computer Science #2 Electronic Computing

One of the largest electro-mechanical computers built was the ______________ in 1944.

• Difference Machine

• Analytical Machine

• Harvard Mark 1

• Yale Device 3

One of the earliest uses for the Harvard Mark 1 was the ___________.

• Manhattan Project

• Sonar for WWI

• GPS for WWII

• Phoenix Initiative

A ___________ works by controlling the flow of energy by opening and closing the circuit, kind of like how a water faucet turns water on and off.

• mechanical relay

• supercomputer

• conductor

• flip switch

Major limitations for the Harvard Mark were... (pick 2)

• slow speed

• wear and tear

• complicated to use

• inaccurate calculations

What's the original for saying a computer has bugs?

• a moth got stuck in a relay

• spiders' web gunked up the machine

• a weevil ate through the wiring

• ants were attracted to the warmth of the machine

What invention would become the basis for radio, long distance telephone, and other devices?

• mechanical relay

• triode vacuum tubes

• insulated wires

• computers

Which device, used to decrypt Nazi communications, is considered the first programmable electronic computer?

• Harvard Mark 1

• Colossus Mark 1

• the Bombe

• the Vacuum tube

What are the benefits of transistors over vacuum tubes? Select all that apply.

• Less expensive

• Less likely to break

• smaller

• faster

Transistors can now be made that are smaller than ___________.

• thickness of paper

• skin cell

• tip of pen

• all of these

Santa Clara Valley in California is also known as _______ for its abundant natural resources used in semiconductor development.

• Iron Valley

• Diamond Valley

• Gold Valley

• Sillicon Valley