Presentation on theme: "Know Your Computer System. Computer System A computer system contains the following components: (1) a system unit (which holds such things as (a) the."— Presentation transcript:
Computer System A computer system contains the following components: (1) a system unit (which holds such things as (a) the CPU, (b) hard drive, (c) RAM, (d) CD-ROM / DVD-ROM, and (e) motherboard), (2) a monitor, (3) a keyboard, and a (4) mouse. Some systems also include printers and other peripheral devices such as scanners and external hard drives. Click here to learn more!here Click on the picture to learn more!
Monitor A monitor is one output device that displays the results of the computer’s processing so the user can see what he or she is working on. A monitor’s size is measured diagonally and the resolution is measured in dots per inch. Newer monitors are labeled SVGA—super video graphics array. Most monitors have controls on the front or side that allow you to change the sound, size, and brightness. Click on monitor to learn more!
Power Supply 1.is a self-contained unit that converts AC from the electrical outlet on the wall to DC used by computer 2.provides power to internal components such as the motherboard, hard drive, CD- ROM / DVD-ROM, floppy, and other devices using power 3.uses a fan to cool the system which dissipates heat
Motherboard main circuit board of the computer additional boards (cards) can be connected to the motherboard to transfer data through the “data bus” it contains 1.CPU (central processing unit) 2.BIOS (basic input output system) chip 3.memory (RAM) 4.storage interfaces (hard drive, floppy, and CD/DVD) 5.serial, parallel, and USB ports 6.expansion slots 7.chips on the motherboard = chipset 8.newer boards have some functionality integrated onto it—network adapter, video, sound, etc., rather than having separate cards installed
BIOS/CMOS BIOS is software stored on a ROM chip that works with the hardware.is software stored on a ROM chip that works with the hardware. BIOS uses CMOS to modify or supplement the setup.BIOS uses CMOS to modify or supplement the setup. New BIOS chips are flashable, which means they can be upgraded to support new hardware components.New BIOS chips are flashable, which means they can be upgraded to support new hardware components. Some peripherals have their own BIOS chips including SCSI and RAID adapter cards.Some peripherals have their own BIOS chips including SCSI and RAID adapter cards. CMOS battery poweredbattery powered stores BIOS informationstores BIOS information Click to learn more!
CPU The central processing unit or processor is plugged into the motherboard. The CPU is the ‘brain’ of the computer where all processing takes place. Cache on the chip (L1 and L2) makes newer CPUs faster. Cache is memory that stores frequently used instructions by the processor. The higher the Mhz or Ghz, the faster the processor. CPUs must stay cool through the use of a heat sink or a CPU fan. ClickClick here
RAM stores chunks of information for the CPU’s tasks to be executed it’s like a waiting room – copied items can be stored there When you turn off the machine, you lose anything in RAM. RAM comes in many different types so you must know what your motherboard will support—SIMMS, DIMMS, RIMMS (all are SDRAM chips) Up to a point, usually the more RAM, the better. Some chips use SRAM—cache chips to store frequently used instructions. ClickClick here
Hard Drive allows the user to write (save) and retrieve (get) information it writes and retrieves information itself “File Cabinet”--files are stored until you need them Most hard drives use a IDE, ATA, EIDI, or SCSI interface. New hard drives use a SATA interface.
Other Storage Media a. CD-ROM b. Floppy Drive c. DVD-ROM d. ZIP Drive e. USB drive
Expansion Cards a. Sound card b. Modem c. Video card d. Network card ClickClick here ClickClick here
Ports 1. Keyboard/Mouse 2. USB: (Universal Serial Bus) USB ports can be used to connect peripherals such as printers, keyboards, mice, and digital cameras. plug and play installation (hot swappable) data transfer rate is 12 Mbps or higher 3. LPT or Parallel Port: uses a 25-pin connector used to connect a printer or external CD-RW 4. COM: serial communications port that functions in DOS transferring only 1 bit of information at a time used for external modems and serial mice 5. Firewire (IEEE): transfer rates of 400 to 800 Mbps, which is ideal for transferring high levels of data in real time (like video)
Printers There are basically two classes of printers—impact, which includes dot- matrix, and non-impact, which includes laser and inkjet). (a) Dot-matrix printers are rapidly becoming obsolete; they are mostly used where multiple copies of documents must be printed at the same time. (b) Laser printers are fast, quiet and give high-quality printouts. However, they are usually more expensive to purchase, and toner is costly. (c) Inkjet printers are less expensive. However, they are not as durable and ink can smear when paper first comes out. ClickClick here ClickClick here ClickClick here
Operating Systems a)Desktop operating systems a)Windows 9x b)Windows 2000 c)Windows XP d)Windows Vista b)Server-based network operating systems (NOS) a)Windows 2000 b)Linux c)Novell c)Mac OS a)OS X (Unix-based)
Operating Systems are loaded into RAM upon boot up manage the system devices through an user-friendly interface called a GUI require more RAM and CPU power as they become more powerful and capable
Examples of Software Programs a)Word processing—create and edit documents b)Spreadsheets—compute numerical data c)Graphing—express data in picture form d)Presentations—automate your speech e)Suite software (includes multiple programs) Microsoft Office XP, Microsoft WorksMicrosoft Office XP, Microsoft Works f)Graphics and Web Publishing—design and manipulate pictures and web sites Corel Draw, Fireworks, Adobe Photoshop, Dreamweaver, Publisher, Front PageCorel Draw, Fireworks, Adobe Photoshop, Dreamweaver, Publisher, Front Page
Examples of Software Programs g)Multimedia—add sounds and pictures to programs Flash, Shockwave, QuickTime (web browser plug-ins)Flash, Shockwave, QuickTime (web browser plug-ins) h)Utilities Norton Anti-virus, McAfee, Norton Disk DoctorNorton Anti-virus, McAfee, Norton Disk Doctor i)Productivity and E-mail—organize and plan activities Outlook, Adobe AcrobatOutlook, Adobe Acrobat j)Browsers—access the Internet Internet Explorer, FirefoxInternet Explorer, Firefox