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Computer Concepts

Learn Computer Concepts in FREE step-by-step lessons.

Quiz on Hardware

After doing all parts of the lesson you should be able to answer these questions.

Write down the answers first. Click the check to check your answer.

Name 2 input devices that are on almost every computer. answer

   Keyboard and mouse

The hard drive is an example of a ____ device. answer

   storage

The transistor replaced the ____ _____. answer

   vacuum tube

What does ALU stand for answer

   Arithmetic Logic Unit

What does CPU stand for? answer

   Central Processing Unit

What does RAM stand for answer

   Random Access Memory

What doss ROM stand for answer

   Read Only Memory

What is Moores Law?. answer

   In 1970 Gordon Earle Moore predicted that processor speeds, or overall processing power for computers will double every two years. This prediction is known as Moore's Law.

True or False: Apple is the largest company in the world by market value. answer

   True, since 2015. (Microsoft is second.)

What are the 3 categories of hardware devices? answer

   processing, storage, and input/output (I/O)

Before electricity mechanical device or persons that performed calculations were called _____ answer

   computers

_____ and ____ follow strict, unambiguous rules that solve specific problems with regular, reproducible procedures. answer

   math and logic

What was the first modern computer? answer

   Charles Babbage’s Analytical Engine

Who was the first programmer? answer

   Ada Lovelace

Instead of the early electric relays, vacuum tubes, diodes, and transistors, what is used today? answer

   integrated circuits

What early computer filled large rooms with cabinets full of vacuum tubes, diodes, relays, resistors, capacitors, and wiring. answer

   ENIAC

____ is considered by most to be the first working programmable, fully automatic, digital computer. answer

   Z3, invented betweene 1930s and 1941 by Konrad Zuse, a German engineer.

True or false: Enigma was used for enciphering and deciphering secret messages. answer

   True, invented by the German engineer Arthur Scherbius in 1918

What are some early computers? answer

   ENIAC, Enigma, Colossus

ENIAC’s input and output utilized ____ ____ answer

   punched cards

The trend in digital technologies has always been toward devices that are ____, ____ ____ and ______. answer

   smaller, more powerful, and faster

True or False: Chips are made of silicon. answer

   True, chips utilize silicon-based transistors with two types of silicon.

When electricity is flowing through a transistor, it represents a ___ answer

   1, otherwise it is represented as 0.

The ____ connects all of a computer’s components and enables them to communicate answer

   motherboard

Electrical pathways on the motherboard that connect the components are called ____ answer

   buses

What are some examples of storage? answer

   SD cards, USB flash drives, optical CDs, DVDs, and Blu-ray discs

What does BIOS stand for? answer

   basic input/output system

Please review the material for any questions you miss.