101ED Concept of a Computer System The Computer System Concept. A computer is more than a high-powered collection of electronic devices performing a variety of information processing chores. A computer is a system‚ an interrelated combination of components that performs the basic system functions of input‚ processing‚ output‚ storage‚ and control‚ thus providing end users with a powerful information processing tool. Understanding the computer as a computer system is vital to the effective
Premium Central processing unit Computer Microprocessor
A computer is a machine that is able to take information (input)‚ do some work on or make changes to the information‚ to make new information (output). Computers have existed for much of human history. Examples of early computers are the astrolabe and the abacus. Modern computers are very different from early computers. They are now very powerful machines that are able to do billions of calculations every second. Most people have used a personal computer in their home or at work. Computers are
Free Programming language Computer program Computer
Memory: 2 Complex Numbers Program: Fixed‚ complex arithmetic calculator Speed: 02 operations per second Z3 Inventor: Konrad Zuse Builder : Konrad Zuse Operational : 1941 Retired: 1944(Destroyed) Cost: $6500 Size: Two 6’ x 3’ x1’ Memory racks Technology: Relays Memory : 64 22-bit floating point words Program: 35mm punched film Speed : 0.5 Operations per second Application: Circuit Analysis‚ defense‚ prototype Atanasoff-Berry Computer(ABC) Inventor : John V. Atanasoff Builder : Atanasoff
Premium Computer ENIAC
HONORS STATISTICS CH1 In an observational study‚ researchers simply observe characteristics and take measurements‚ as in a sample survey. In a designed experiment‚ researchers impose treatments and controls and then observe characteristics and take measurements. Data from a sample of citizens of a certain country yielded the following estimates of average TV viewing time per month for all the citizens. Answer: Inferential‚ because the statistics are used to make inference about the
Premium Arithmetic mean Standard deviation Median
Definition of computer and parts of computer. 4th Week: Data and information 5th Week: Input devices & Output devices. 6th Week: Classification and uses of computer. 7th Week: Mid – Term Test. 8th Week: Revision of terms work 9th Week: Computer peripherals‚. 10-11th Week: Revision. 12-13th Week: Examination. COMPUTER SCIENCE SECOND TERM SCHEME OF WORK (JSS 1) 1ST Week Revision of first term work 2nd Week Computer parts. Hardware
Premium Computer Programming language
INTRODUCTION Computer is defined as a combination of electro-mechanical devices (Hardware) capable of accepting data or information‚ processing‚ storing‚ and providing output under the control of some instructions and commands called programs (Software). Computers are machines that perform tasks or calculation according to a set of instruction or programs. Introduce in 1940s the first fully electronic computers were huge machines that required teams of people to operate. Compared to those early
Premium Computer
Date | Event | c. 2400 BC | The abacus - the first known calculator‚ was probably invented by the Babylonians as an aid to simple arithmetic around this time period. This laid the foundations for positional notation and later computing developments. | 1300 | Ramon Llull invented the Lullian Circle: a notional machine for calculating answers to philosophical questions (in this case‚ to do with Christianity) via logical combinatorics. This idea was taken up by Leibniz centuries later‚ and is thus
Premium Computer ENIAC
HISTORY OF COMPUTERS Historical records will tell us that man has invented three types of devices to assist him in calculating and processing data. These devices could be classified into: a) Manual-mechanical b) Electromechanical c) Electronic 2000 BC - MECHANICAL COMPUTER THE ABACUS * Computations are done by sliding beads on a wire arranged on a tray. Came from the Greek word abax meaning flat surface John Napier(1617) – Logs and Bones * a Scotsman‚ invented
Premium Computer Programming language
evolution of computer describing the technologies used in different generations. The evolution of computers started way back in the late 1930s. Binary arithmetic is at the core of the computers of all times. History of computers dates back to the invention of a mechanical adding machine in 1642. Abacus‚ an early computing tool‚ invention of logarithm by John Napier and the invention of slide rules by William Oughtred were significant events in the evolution of computers. Evolution of computer technology
Free Computer Integrated circuit
HISTORY OF COMPUTERS Ancient era Suanpan (the number represented on this abacus is 6‚302‚715‚408) Devices have been used to aid computation for thousands of years‚ mostly using one-to-one correspondence with fingers. The earliest counting device was probably a form of tally stick. Later record keeping aids throughout the Fertile Crescent included calculi (clay spheres‚ cones‚ etc.) which represented counts of items‚ probably livestock or grains‚ sealed in hollow unbaked clay containers.[1][2]
Premium Calculator Computer