Computer hardware

PRESENTATION The theme:Computer Hardware. . Hardware components are further divided into three groups. INPUT DEVICE input device is a piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance. OUTPUT DEVICE output device is any piece of computer hardware equipment which converts information into human-readable form. It can be text, graphics, tactile, audio, and video SYSTEM UNIT system unit is the part of a computer that houses the primary devices that perform operations and produce results for complex calculations. It includes the motherboard, CPU, RAM and other components, as well as the case in which these devices are housed. Computer hardware Plan: Monitor Keyboard Floppy Drive Printer Scanner Definition of a Computer A computer is an device that receives information (input), processes information, and outputs information inputoutput device that processes information Computer Hardware Key parts of a computer Input vs. output Interconnection between parts Essential Parts Box - Central Processing Unit (CPU) Monitor - main output device Keyboard - main input device The Box (CPU) All processing goes through the box A simple inputoutput (IO) device Ports on back for connection of input and output devices Disk drives on front for storage IO Input vs. Output? Classify the following as input or output Monitor Keyboard CPU (The Box) Floppy Drive CD-ROM Printer Scanner Modem Digital Camera CD WriterBurner Hard Drive LCD Projector Laser Pointer Network Card Bluetooth Card Speakers Computer Monitor Keyboard HD FD CD-RW Printer Scanner Camera Mouse Modem LCD Output Input IO Read - Write Legend Inside the Box Processor - e.g. Pentium IV Memory - e.g. 256 MB RAM Storage - e.g. Hard Drive, CD-RW Slots Cards We will cover this on Monday Input: Keyboards Standard keyboard - 101 key, letters, number-pad, function keys Microsoft Natural Keyboard - Ergonomic design, supposedly better for wrists Wrist support is important The future? Output: Types of Monitors Cathode Ray Tube (CRT) - standard monitor, inexpensive, good resolution, good pixel size Flat Panel (Liquid Crystal Display - LCD) - more expensive, prices dropping Buying a Monitor Size is most important factor Get a 17 CRT or 15 LCD or bigger Note 15 LCD is about the same as a 17 CRT 15 CRT cheaper but will seem very small Dot size advertised, not that big of a factor Viewable Area - 15.8 for a 17 CRT ...