Computers Flashcards
refers to an electronic device that accepts data and instructions
Computer
Characteristics and Capabilities of Computer according to
Dinesh Thakur
Characteristics and Capabilities of Computer according to Dinesh Thakur
- Speed
- Accuracy
- Diligence
- Versatility
- Power of Remembering
- No IQ (Intelligence Quotient)
- No Feelings
- Storage
Enumerate the Manual-Mechanical Devices
Abacus
Napier’s Bone
Oughtred’s Slide Rule
Pascaline Calculator
Leibniz Calculator
Babbage Difference and Analytical Engines
operated manually by the user.
Manual-Mechanical Devices
- counting frame
- first man-made computing device.
Abacus
calculating products and quotient
Napier’s Bone
- Mechanical analog computer consists of movable bars with a precise scale
Oughtred’s Slide Rule
Oughtred’s Slide Rule invented by?
William Oughtred
- Also called adding machine.
- first mechanical calculating device that uses cogged wheels that can be used to add and subtract two numbers
Pascaline Calculator
Pascaline calculator invented by?
Blaise Pascal
- improved Pascaline which could multiply and divide
Leibniz Calculator
Leibniz calculator by?
Gottfried Leibniz
- Embodied most of the design of modern computers
Babbage Difference and Analytical Engines
Invented by Charles Babbage
Babbage Difference and Analytical Engines