| A | B |
|---|
| User, software, hardware and electricity | Four elements make up personal computer system |
| Central element is _____? ____ who needs to perform task | user |
| It requires certain hardware components | Software |
| Equipment called ____? ____ as can physically touch components | Hardware |
| Programs called ___? ___ as only they function while computer on | Software |
| Coded set of instructions computer uses through series of on/off signals to perform task | Software |
| Central Processing Unit | CPU |
| Random Access Memory | RAM |
| Input/Output Devices | I/O Devices |
| It is installed inside system unit | Internal device |
| It is plugged into connection outside computer | External device |
| Largest electronic circuit board in computer | Motherboard |
| Foundation of computer | Motherboard |
| Consists of CPU, RAM, and ROM BIOS | Motherboard |
| Lies on bottom of box or side of tower | Motherboard |
| Contains number of items to make computer work or to expand capability | Motherboard |
| Expands computer by adding items such as graphics card, etc. | Expansion |
| Peripheral Component Interconnect; add new components or cards such as modem or sound card. | PCI |
| Accelerated Graphics Port; handles 3-D graphics. | AGP |
| Central Processing Unit; contains microprocessor chip. | CPU |
| Random Access Memory; designed for these memory chips. | RAM |
| Determines time and date as set in BIOS; runs on battery. | System Clock |
| Connects various input/output devices such as mouse or keyboard. | Input/Output |
| Often called brain of computer | The Microprocessor Chip |
| Located on motherboard | The Microprocessor Chip |
| Receives and executes instructions from software programs activated by user | The Microprocessor Chip |
| Processes information and instructions at speeds | The Microprocessor Chip |
| Megahertz (MHz) | Speed of The Microprocessor Chip |
| Gigahertz (GHz) | Speed of The Microprocessor Chip |
| 8088 (XT) | 4 to 10 MHz |
| 80286 (286 or AT) | 8 to 16 MHz |
| 80386SX/DX (386SX/DX) | 16 to 33 MHz |
| 80486 (486) | 25 to 100 MHz |
| Pentium | 60 to 200 MHz |
| 6x86 | 120 to 166 MHz |
| Pentium (MMX) | 166 to 200 MHz |
| Pentium PRO | 150 to 200 MHz |
| Pentium II | 200 to 400 MHz |
| Pentium III | 500 MHz to 1.2 GHz |
| Pentium 4 or Pentium M | 1.4 to 3.2+ GHz |
| Pentium 5 | 5 GHz to 7 GHz |
| Circuit boards | The Power Supply - 5v |
| Hard drives and CD-ROMs | The Power Supply - 12v |
| Newer computer systems | Generally use lower voltages |
| Openings at back or front of system unit, or sides of notebook | Expansion Slots |
