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14 - Additional Context and Trivia (Boolean Logic)

 1. When there is a voltage across a wire inside a computer, this represents the binary digit 0.

  FALSE

  TRUE

 2. Logic gates are electronic circuits that manipulate _______ or in effect manipulate the binary 1s and 0s that are inside your computer.

  voltages

  waves

  ASCII values

  binary sequences

 3. The ENIAC is widely thought to be the first ever electronic general purpose computer. These sort of computers had hundreds of ___________________________________
______ can also be thought of as special types of switch. _____ can be in one of two states: on or off. 

  small CPU chips - brains of any machine

  binary bits - that are the building blocks of computers

  valves - that are electric current amplifiers

  microscopic atomic cells - that allow for storage

 4. One of the problems with valves is that they were bulky, burned out easily and weren't terribly efficient. (as compared to transistors)

  TRUE

  FALSE

 5. Transistors were much much larger than valves and were therefore much more efficient and powerful.

  FALSE

  TRUE

 6. This is the symbol used to represent a _______ by electronic engineers
representationofatransistoree.png

  transistor

  resistor

  AND gate

  generator

 7. This is the symbol used to represent a ____________ by electronic engineers
representationofaresistoree.png

  resistor

  transistor

  OR gate

  generator

 8. If a transistor and a resistor are combined into a circuit which looks like this (see diagram), they produce a circuit that behaves like a ____________ gate.
representationofNOTgateusingresistorsandtransistors.png

  NOT

  FOR

  OR

  AND

 9. The combination of transistors and resistors in various ways is how we get the different ____________ that each have their own symbol (e.g. 'OR', 'AND' etc) in Boolean Logic

  circular mazes

  gates

  buses

  mates

 10. A modern day CPU (like the one shown in the image) may have up to a maximum of 1000 transistors in it.
moderndaycpu.png

  TRUE

  FALSE