Computer Hardware

CSCI-N 100Dept. of Computer and Information

Science

Motherboard

Central or primary circuit board Also known as a mainboard system board logic boards

Motherboard

Daughterboard

An extension or "daughter" of a motherboard Often have plugs, sockets, pins, connectors, or other attachments for other boards Usually have only internal connections within a computer or other electronic device rather than any external Access the motherboard directly

Daughterboard

Central Processing Unit

The component in a digital computer that interprets computer program instructions processes data

Fundamental operation is to execute a sequence of stored instructions called a program Fetch (retrieving an instruction) Decode (the instruction is broken up into parts that have

significance to other portions of the CPU ) Execute (ALU) Writeback (the results of the execute step)

Central Processing Unit

Memory

Random access memory (usually known by its acronym, RAM) Type of data store used in computers Takes the form of integrated circuits that allow the stored data to be accessed in any order at random and without the physical movement of

the storage medium or a physical reading head any piece of data can be returned quickly, and in

a constant time, regardless of its physical location and whether or not it is related to the previous piece of data

Single Inline Memory Module (SIMM)

1. 32-pin2. 72-pin

Dual Inline Memory Module (DIMM)

1. 168-pin2. 184-pin

Power Supply Unit (PSU)

typically is designed to convert 110 V or 230 V AC power from the mains to usable low-voltage DC power for the internal components of the computer. Most power supplies have an On/Off switch on the back. There usually is a sticker on the PSU with a list of certifications, the specification, and a warning not to open the enclosure

Power Supply Unit

Video/Graphic CardsAlso referred to as a graphics accelerator card, display adapter and numerous other terms Used to refer to a separate, dedicated expansion card that is plugged into a slot on the computer's motherboard Consists of a printed circuit board on which the components are mounted Graphics processing unit Video memory Video BIOS

Accelerated Graphics Port (AGP)

PCI Express video adapter card

Sound card

A computer expansion card that can input and output sound under control of computer programs Typical uses of sound cards include providing the audio component for multimedia applications music composition editing video or audio presentation/education entertainment (games)

Sound Card

Floppy

5 ¼ in.

3 ½ in.

5 ¼ in. Floppy Drive 3 ½ in. Floppy

Drive

Zip

A standard ZIP100 Disk

Later (USB, left) and earlier (parallel, right) Zip drives (media in foreground)

Flash

1. USB connector 2. USB mass storage

controller device 3. Test points 4. Flash memory chip 5. Crystal oscillator 6. LED 7. Write-protect switch8. Space for second

flash memory chip Internals of a typical flash drive(Seitec brand USB1.1 pictured)

Hard disk Drive

An IBM hard disk drive with the metal cover removed. The platters are highly reflective Close-up of a hard disk head suspended

above the disk platter together with its mirror image in the smooth surface of the magnetic platter

CD drive lens

Network Card

Network cards such as this one can transmit data at high rates over various types of network cables. This particular card is a 'Combo' card which supports three cabling standard types

Network Card - for DSL/Cable internet, and/or connecting to other computers

Modem - for dial-up connections

Keyboard - QWERTY

Lt Blue – typewriter keys Yellow – Function keys Lt yellow – Enter keys

Pink – Windows keys Dark Blue – Numeric pad White - Other

Purple – Application keys Green – Cursor control keys

Dvorak Simplified Keyboard

Tracking Devices

A computer pointing device Designed to detect two-dimensional motion relative to its supporting surface "X-Y Position Indicator for a Display System"

Tracking Devices

One button

Two button

Three button

Optical

The Dvorak Keyboard and YouCopyright © 2002-2007 Jordon Kalilich

http://www.theworldofstuff.com/dvorak/

Wikipedia, the free encyclopedia

http://en.wikipedia.org/wiki/Computer_hardware

Resources

Motherboard http://en.wikipedia.org/wiki/Image:ASRock_K7VT4A_Pro_Mainboard.jpg

Daughterboard http://en.wikipedia.org/wiki/Image:Soundscapedb.jpg

CPU http://en.wikipedia.org/wiki/Image:Intel_80486DX2_bottom.jpg

SIMM http://en.wikipedia.org/wiki/SIMM

DIMM http://en.wikipedia.org/wiki/Image:DIMMs.jpg

Power Supply http://en.wikipedia.org/wiki/Image:PSU-Open1.jpg

CD Lens http://en.wikipedia.org/wiki/Image:CD_drive_lens.jpg

Sound Card http://en.wikipedia.org/wiki/Image:Sblive%21.jpg

Video Card http://en.wikipedia.org/wiki/Image:PCI-E_Video.jpg

AGP http://en.wikipedia.org/wiki/Image:AGP_slot.jpg

Tracking Devices http://en.wikipedia.org/wiki/Image:Apple_mouse_Pro.jpg

http://en.wikipedia.org/wiki/Image:2-buttons_mouse.jpg

http://en.wikipedia.org/wiki/Image:Logitech_3_buttons_mouse.jpeg

http://en.wikipedia.org/wiki/Image:Optical_mouse_shining.jpg

Images

Images (cont’d)

Floppy disk/drives http://en.wikipedia.org/wiki/Image:Floppy_disk_5.25_inch.JPG http://en.wikipedia.org/wiki/Image:5.25_in._floppy_disk_drive_top.jpg http://en.wikipedia.org/wiki/Image:Compact_Floppy.jpg http://en.wikipedia.org/wiki/Image:Floppy_disk_drive_top_%28cover_removed%29.jpgZip disk/drive http://en.wikipedia.org/wiki/Image:ZipDrives.jpeg http://en.wikipedia.org/wiki/Image:Zip-disc-back.jpgFlash http://en.wikipedia.org/wiki/Image:Usbkey_internals.jpgHarddrive http://en.wikipedia.org/wiki/Image:Hard_disk_platter_reflection.jpg http://en.wikipedia.org/wiki/Image:Hard_disk_head.jpgNetwork/Modem http://en.wikipedia.org/wiki/Image:EtherlinkIII_ubt_cleaned.png http://en.wikipedia.org/wiki/Image:ModemISAv34.jpg http://en.wikipedia.org/wiki/Image:Network_card.jpgKeyboard http://en.wikipedia.org/wiki/Image:Qwerty.svg