teleprinter-style keyboards became the main input device for computers. A keyboard typically has characters engraved or printed on the keys and each press of a key typically corresponds to a single written symbol. However‚ to produce some symbols requires pressing and holding several keys simultaneously or in sequence. While most keyboard keys produce letters‚ numbers or signs (characters)‚ other keys or simultaneous key presses can produce actions or computer commands. Despite the development of alternative
Premium Computer Input device
HISTORY OF COMPUTER THE PRE-MECHANICAL AGE: 3000 B.C. – 1450 A.D. 1. Writing and Alphabets – Communication First development of signs corresponding to spoken sounds‚ instead of pictures‚ to express words. Around 2000 B.C.‚ Phoenicians created symbols that expressed single syllables and consonants (the first true alphabet) The Greeks later adopted the Phoenician alphabet and added vowels; the Romans gave the letters Latin names to create the alphabet we use today. 2. Paper
Premium Computer ENIAC Konrad Zuse
2 Fundamentals of Computer Systems You need to be able to: (a) define a computer system (b) describe the importance of computer systems in the modern world (c) explain the need for reliability in computer systems (d) explain the need for adherence to suitable professional standards in the development‚ use and maintenance of computer systems (e) explain the importance of ethical‚ environmental and legal considerations when creating computer systems. What is a computer system? At its very basic
Premium Computer Binary numeral system
TECHNOLOGY AND CRIME Cybercrime‚ hacking‚ blackmailing‚ fraud‚ theft and extortion; these are the first few types of crimes come into my mind when we are presented with the words “technology” and “crime”. One of the reasons might be that we all have been prone to the nuisance caused by any of these crimes at least once‚ as almost everyone these days has access to the computer and the internet. Lets us start by considering the fact that Crime has existed as long as humans and will only become extinct
Premium Law enforcement agency Police Crime
------------------------------------------------- HND Computer and Systems Development ------------------------------------------------- ASSIGNMENT ------------------------------------------------- 2012 – 13 COLLEGE | City of Westminster College | PROGRAMME | HND Computer and Systems Development | MODULE NAME & CODE | Computer Systems Unit 2 (L/601/0446) | STUDENT NAME | | ASSESSOR | Anas Ahmed | ASSIGNMENT NUMBER | ONE | | Tasks | Hand in Dates: | | Task 1 – Report | Friday 14th
Premium Software engineering Operating system Computer
Transnational Crime Comparative Criminal Justice Systems Introduction: Transnational crime is a growing problem. Transnational crime is defined as “self-perpetuating associations of individuals who operate transnational for the purpose of obtaining power‚ influence‚ monetary and/or commercial gains‚ wholly or in part by illegal means‚ while protecting their activities through a pattern of corruption and/ or violence‚ or while protecting their illegal activities through a transnational structure
Premium Crime Piracy Terrorism
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
in using computers? · What are the purposes of elementary students in using computers? > educational purposes such as research. > Entertainments like playing online games. · What are the implications of computer’s exposure to students in terms of: > Cognitive (involved in learning‚ knowing‚ and understanding things) POSITIVE EFFECT = Helps to widen their learnings = They can develop their communication skills. NEGATIVE EFFECTS = Ma prone sila sa mga content sa computer na dili
Free Computer Education Emotion
In this article the Computer Misuse Act 1990 was raised. It states that a teenage from Dorset England. Aaron Caffrey aged 19 had apparently sent a virus to another person computer while they were at work at America’s bigger port. The convicted was accused of hacking into the system and sent a virus use cause the either network of computers which caused them all to crash. The law that he had broken was the Computer Misuse Act 1990 the law states the following: “The Act contains three main offences
Premium Computer security Computer Security
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