Group 4 Flashcards
It was invented in Babylonia in the years 3000 B.C.
It is used to do Math or to calculate around the world.
Abacus
A manual tool used to keep track of numbers and to perform basic mathematical operations.
Abacus
Pascal’s calculator is a mechanical calculator invented by Balise Pascal’s in 1642.
This device could perform simple arithmetic operations like addition and subtraction, using a series of gears and dials.
Pascaline
Created by German mathematician and philosopher Gottfried Wilhelm Leibniz.
It was the first mechanical calculator capable of performing addition, subtraction, multiplication and division. 1673
Stepped Reckoner
It was first described by James Thomson
It performs continual integration of the value of an input.
Ball-and-Disk Integrator
Created by Charles Babbage
Automatic mechanical calculator
Construction began in 1819 and had completed it by 1822
Difference Engine
Created by Charles Babbage
It was first described in 1837
A simpler version of the difference machine
Analytical Engine
It was built during world war 2 in Germany
It executes a sequence of instruction
And explain the use of binary numbers
Invented by Konrad Zuse
Z3
It was invented by Howard H. Aiken in 1943
This is known as IBM automatic sequence controlled calculator(ASCC)
It could perform basic math operations and could store and process data.
It is used for scientific calculations, and other war-related tasks
Harvard Mark 1
Developed by John presper eckhart and john Mauchly
It solves complex math problems, especially for military purposes and completed in 1945
ENIAC 1945
It was introduced in the late 1940s by John Von Neumann
It could store both the concept program (the instructions) and the data in their memory unit
Stored program computers
It replaced the bulky vacuums tubes used in early computers, making them smaller and more efficient.
Transistors
Tiny chip that holds thousands of transistors and other components.
Integrated circuit
Multi-user systema that support multiple simultaneously users and run multiple programs at the same time.
These are often used in business environments for tasks such as word processing, database management, and networking.
Minicomputers
It is a microcomputer designed for use by one person at a time.
It retrieve and process data of all kinds
Personal Computer
“Brain of the Computer”
It input the instructions from the memory, decode, and process them and produce the output.
Microprocessors
First created by Alan Kay and Douglas Engelbert in 1981
It enables communication to the computer.
Graphical User Interface (GUI)
January 1, 1983 is considered as its official bday
It became generalised in the early 1990s
It revolutionized mass communication, mass media and commerce
Internet
It was created by Tim Berners-Lee in 1989
It standardised communication between servers and clients.
World Wide Web (WWW)
It is regarded by most historians as the first real mobile computer.
Founded in 1981 by Adam Osborne, named as Osborne 1
Laptop
First produced handheld mobile phone
Developed by company Motorola in 1973
Smartphones
