history of computers

​History of computers review

​ABACUS

​*one of the first devices used to count and keep track of numbers.

​*introduced by the Romans in 500 CE

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​BINARY NUMBER SYSTEM

• the base-2 numeral system or binary numeral system, a method of mathematical expression which uses only two symbols: typically "0" and "1"

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• used in computers to manipulate and store data

​Altair 8800

​*designed by Ed Roberts , who owned calculator company MITS

​*first microcomputer kit

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​ALTAIR, con't

*Bill Gates and Paul Allan jumped at the chance to design a BASIC program to improve it

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​*inspired many computer enthusiasts, including Steve Jobs and Steve Wozniak of Apple

​Beginners' All-purpose Symbolic Instruction Code

​BASIC

• ​designed in 1950s in Dartmouth University

• ​simplified coding language

• ​more user freindly than previous language

​Apple Computers

• founded by Steve Jobs and Steve Wozniak ​in 1976 in their garage

• ​designed more user friendly personal computers

​ETHERNET

• developed in 1970s by XEROX

• technology to connect devices with local area​ network (LAN)

Multiple Choice

Who invented the Tabulating Machine?

• Gottfried Wilhelm Leibniz

• Charles Babbage

• Herman Hollerith

• Howard H. Aiken

Multiple Choice

Who was the first person to create the first personal electronic computer?

• Grace Hopper

• Charles Babbage

• Elon Musk

• Hollerith

Multiple Choice

What is BASIC?

• The first electronic computer

• An early computer code that was more user friendly

• The first internet

Multiple Choice

Which was the first computer kit that led to the development of Microsoft and Apple?

• Altair 8800

• XEROX 700

• Mac 1

• BASIC

Multiple Choice

The first computer progammer was ______________.

• Ada Lovelace

• Charles Babbage

• Herman Hollerith

• Howard H. Aiken

Multiple Choice

This machine was used to count and sort information for the US census. It was the __________________________.

• Abacus

• Hollerith's Tabulating Machine

• Analytical Engine

• Difference engine