LESSON 2 Flashcards
an electronic machine that accepts information (Data), processes it according to specific instructions, and provides the results as new information.
Computer
- Earliest Computers
Originally calculations were computed by humans, whose job title was?
Computers
These human computers were typically engaged in the calculation of a mathematical expression.
Earliest computers
The calculations of this period were specialized and expensive, requiring years of training in mathematics.
Earliest computers
- Earliest computers
These human computers were typically engaged in the calculation of a?
Mathematical expression
The first use of the word _________ was recorded in _______?
The first use of the word “𝐂𝐨𝐦𝐩𝐮𝐭𝐞𝐫” was recorded in “𝟏𝟔𝟏𝟑”
•Earliest computers
The first use of the word “computer” was recorded in 1613, referring to a _____________ who carried out ____________, or ___________, and the word continued to be used in that sense until the middle of the ______________.
The first use of the word “computer” was recorded in 1613, referring to a “person “ who carried out “calculations”, or “computations “, and the word continued to be used in that sense until the middle of the “20th century” .
an ancient memory aid device to record and document numbers, quantities, or even messages.
Tally stick
a mechanical device used to aid an individual in performing mathematical calculations.
Abacus
The abacus was invented in?
Babylonia in 2400 B. C
The abacus in the form we are most familiar with was first used in?
China in around 500 B.C.
Abacus used to perform basic ____________?
Arithmetic operations
Napier’s Bones Invented by?
John Napier in 1614.
Allowed the operator to multiply, divide and calculate square and cube roots by moving the rods around and placing them in specially constructed boards.
Napier’s Bones
Napier bones, allowed the operator to ________, _________ and calculate _________ and ___________ by moving the rods around and placing them in specially constructed boards.
Allowed the operator to “ multiply”, “divide” and calculate “square” and “cube roots”
Slide Rule was Invented by?
William Oughtred in 1622
Slide rule is based on Napier’s idea about?
Logarithms
Slide Rule used primarily for?
• Multiplication
• division
• roots
• logarithm
• trigonometry
This is not normally used for addition or subtraction?
Slide Rule
Pascaline was Invented by?
Blaise Pascal in 1642.
It was its limitation to addition and subtraction, and it was too expensive
Pascaline
Stepped Reckoner was Invented by?
Gottfried Wilhelm Leibniz in 1672.
The machine that can add, subtract, multiply and divide automatically.
Stepped Reckoner
Stepped Reckoner, the machine that can ____ , ________ , ________ and _________ automatically.
The machine that can “add” , “subtract” , “ multiply” and “divide” automatically .
