Hardware & software
- 1. Capabilities & Characteristics of Prepared by: Jane L. Garay
- 3. Storage Hardware Storage capacity of computer is expressed in bits, bytes, kilobytes, megabytes, gigabytes, te rabytes, petabytes or exabytes.
- 4. Bit = short for binary digit (0s and 1s) Bytes = 8 bits (usually represent one character, digit, or symbol) Kilobyte (KB) = 1,024 Bytes Megabyte (MB) = 1, 024 KB Gigabyte (GB) = 1,024 MB Terabyte (TB) = 1,024 GB Petabyte (PB) = 1,024 TB Exabyte (EB) = 1,024 PB
- 5. Primary Storage RAM RAM (random access memory) is the place in a computer where the operating system, application programs, and data in current use are kept so that they can be quickly reached by the computer's processor.
- 6. Secondary Storage Any storage device designed to retain data and instructions (programs) in relatively permanent form.
- 7. Tape Storage (magnetic tapes, cartridge tape units) Magnetic Tapes are especially popular for back-up storage. Diskette Storage (floppy disks, diskettes) Floppy Disks are probably the most common storage device, especially for users of PC.
- 8. Hard Disks Rigid metal platters that hold data as magnetized spots.
- 9. Optical Disks CD-ROM- Compact Disk Read-Only Memory CD-R- Compact Disk Readable CD-RW- Compact Disc Re-writable DVD-RW- Digital Versatile Disc Recordable WORM Disks- Write-Once-Read-Many
- 10. Mass Storage Device USB Flash Drive- are typically removable and rewritable and muck shorter than a floppy disk.
- 11. Solid-State Drive A data storage device that uses solid-state memory cards to store persistent data.
- 12. Output Hardware Devices that translate information processed by the computer into a form that humans can understand.
- 13. Two Main Output Device Monitor Printer
- 14. Monitor The most common of all output devices. It provides a soft copy of the information to be displayed- that is, it is not in printed form.
- 15. Information displayed on a monitor uses dots, or pixels. Ex. of monitor
- 16. Printer A printed or hardcopy is produced by means of computer sending instructions to the printers. Essential in outputting the information produced by the system.
- 17. Two main categories of Printer Impact Print by striking the paper through an inked ribbon. Non-Impact Use methods other than strike to produce the output.
- 18. Ex. of Impact Printer Dot matrix printer
- 19. Ex. of Non-impact Printers Ink-Jet Printer Laser Printer
- 20. Communication Hardware It facilitate the connection between computers and between groups of connected computers (networks).
- 21. Modem (modulator-demodulator) Allows transmission of data from one computer to another via telephone lines. Convert a computer’s digital signal into analog signals and vice versa.
- 22. Modem
- 23. Fax-modem A modem with a fax capability.
- 24. Network Interface Card (NIC) Commonly used when computers are part of LAN or connected to the internet using broadband connection.
- 25. Network Interface Card (NIC)
- 26. Wireless Network Interface Card Used for wireless connection to a LAN or the internet.
- 28. The End.. THANK YOU !!!