computer hardware introduction. computer hardware introduction the basic form of a computer is this:...
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Computer Hardware Computer Hardware
IntroductionIntroduction
Computer Hardware Computer Hardware IntroductionIntroduction
The basic form of a computer is this:
PROCESSING
MEMORY
INPUT OUTPUT
But let’s look inside a computer in more detail first
Computer Hardware Computer Hardware IntroductionIntroduction
CENTRAL PROCESSING UNIT (CPU)MOTHERBOARD
POWER SUPPLY
RANDOM ACCESS MEMORY (RAM)HARD DRIVE
OPTICAL DRIVEOTHER DISK DRIVES
OTHER CARD SLOTSVIDEO CARD
• is the connector of most other parts of the computer
•Is a large plastic chip with many integrated metal connections
Computer Hardware Computer Hardware IntroductionIntroduction
CENTRAL PROCESSING UNIT (CPU)
MOTHERBOARD
POWER SUPPLY
RANDOM ACCESS MEMORY (RAM)HARD DRIVE
OPTICAL DRIVEOTHER DISK DRIVES
OTHER CARD SLOTSVIDEO CARD
• This is the BRAIN of the computer that does the actual tasks required by the computer
• It is usually covered by a fan that helps cool it off
Computer Hardware Computer Hardware IntroductionIntroduction
CENTRAL PROCESSING UNIT (CPU)MOTHERBOARD
POWER SUPPLY
RANDOM ACCESS MEMORY (RAM)HARD DRIVE
OPTICAL DRIVEOTHER DISK DRIVES
OTHER CARD SLOTSVIDEO CARD
• This is the TEMPORARY MEMORY of the computer•It holds all of the tasks that are going on at any one time•Accessing it is VERY FAST, but it only works while the computer is running
•when the computer is turned off, everything that was stored in RAM is lost
Computer Hardware Computer Hardware IntroductionIntroduction
CENTRAL PROCESSING UNIT (CPU)MOTHERBOARD
POWER SUPPLY
RANDOM ACCESS MEMORY (RAM)
HARD DRIVE
OPTICAL DRIVEOTHER DISK DRIVES
OTHER CARD SLOTSVIDEO CARD
• This is the main semi-PERMANENT MEMORY of the computer• Files can be written and read by means of a magnet placing signals on a metal disc• It is slower than RAM, however it holds much more data and will keep the data even if the computer is turned off
Computer Hardware Computer Hardware IntroductionIntroduction
CENTRAL PROCESSING UNIT (CPU)MOTHERBOARD
POWER SUPPLY
RANDOM ACCESS MEMORY (RAM)HARD DRIVE
OPTICAL DRIVEOTHER DISK DRIVES
OTHER CARD SLOTSVIDEO CARD
• This is the unit that provides power to most of the computer’s parts• It has an input wire that is plugged into the wall socket• It not only transfers power, but it also changes the voltages of the electricity, since different parts need different amounts of power• It has lots of red, black and yellow wires that connect the parts of the computer
Computer Hardware Computer Hardware IntroductionIntroduction
CENTRAL PROCESSING UNIT (CPU)MOTHERBOARD
POWER SUPPLY
RANDOM ACCESS MEMORY (RAM)HARD DRIVE
OPTICAL DRIVEOTHER DISK DRIVES
OTHER CARD SLOTSVIDEO CARD
• They are often called the CD Drive, and include CD-W, CD-WR, DVD, DVD-R etc• They are all the drives that use lasers to read information that is etched onto a plastic disc• They are a way to store data permanently, but also in a way that is portable
Computer Hardware Computer Hardware IntroductionIntroduction
CENTRAL PROCESSING UNIT (CPU)MOTHERBOARD
POWER SUPPLY
RANDOM ACCESS MEMORY (RAM)HARD DRIVE
OPTICAL DRIVE
OTHER DISK DRIVES
OTHER CARD SLOTSVIDEO CARD
• These are other forms of portable semi-permanent memory that are usually in the form of a removable disk• This particular computer does not seem to have one, but this is where it would be usually found
Computer Hardware Computer Hardware IntroductionIntroduction
CENTRAL PROCESSING UNIT (CPU)MOTHERBOARD
POWER SUPPLY
RANDOM ACCESS MEMORY (RAM)HARD DRIVE
OPTICAL DRIVEOTHER DISK DRIVES
OTHER CARD SLOTSVIDEO CARD
• This is the card that controls what shows up on the monitor• The more demanding the needs of what is being shown (video gaming, animation, etc), the more powerful the video card needs to be
Computer Hardware Computer Hardware IntroductionIntroduction
CENTRAL PROCESSING UNIT (CPU)MOTHERBOARD
POWER SUPPLY
RANDOM ACCESS MEMORY (RAM)HARD DRIVE
OPTICAL DRIVEOTHER DISK DRIVES
OTHER CARD SLOTS
VIDEO CARD
• This are spaces for other cards to be connected to the system• The most common is likely a Network Card, which allows the computer to be connected to a network of other computers
• This is also likely how your computer is connected to the Internet at home
Computer Hardware Computer Hardware IntroductionIntroduction
Outside of the computer, we connect a number of PERIPHERALS
INPUT DEVICES
Keyboard
Mouse
Touchscreen
Light Pen
Scanner
MEMORY STORAGE
External Hard Drive
CD/DVD
Flash Drive
Diskette
Magnetic Tape
OUTPUT DEVICES
Monitor
Printer
Speakers
(MORE) PERMANENT MEMORY
TEMPORARY MEMORY
OUTPUT
PROCESSING UNIT
INPUT
Computer Hardware Computer Hardware IntroductionIntroduction
MOUSE
KEYBOARD
TOUCH SCREEN
CPU
VIDEO CARD
MONITOR
RAM
FLASH DRIVE
OPTICAL DRIVE
HARD DRIVE
PRINTER
POWER SUPPLY