The history of computing
An informative leaflet
Input devices
- Mouse
- Barcode reader
- Touch screen
Processing+Storage
CPU
The CPU (Central Processing Unit) is the part of a computer system that is commonly referred to as the "brains" of a computer. The CPU is also known as the processor or microprocessor. The CPU is responsible for executing a sequence of stored instructions called a program.
Power Supply
A power supply is an internal hardware component that supplies components in a computer with power. The power supplyconverts a 110-115 or 220-230 volt alternating current (AC) into a steady low-voltage direct current (DC) usable by the computer and rated by the number of watts it generates.
Moving on...
Binary Code-What is binary code?
A coding system using the binary digits 0 and 1 to represent a letter, digit, or other character in a computer or other electronic device.
00001=A
00010=B
00100=C
01000=D
Alan Turing-Who is he?
Alan Mathison Turing OBE FRS was a pioneering English computer scientist, mathematician, logician, cryptanalyst and theoretical biologist.
What did he do?
During World War II, he developed a machine that helped break the German Enigma code. He also laid the groundwork for modern computing and theorized about artificial intelligence.
NETWORKS-What is a network?
A computer network is a set of computers connected together for the purpose of sharing resources. The most common resource shared today is connection to the Internet. Other shared resources can include a printer or a file server.
Different types of networks... Star
Star networks are one of the most common computer network topologies. In its simplest form, a star network consists of one central switch, hub or computer, which acts as a conduit to transmit messages
Bus Topology
A bus network is a network topology in which nodes are directly connected to a common linear (or branched) half-duplex link called a bus.
Ring Topology
A ring network is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node - a ring. Data travel from node to node, with each node along the way handling every packet.