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Computer Parts

Computer Parts. Computer Information Technology – Section 1-1. Parts of the Computer. Objective: To identify the parts of a computer and their uses. Parts that are visible. Parts that are visible. Monitor. Mouse. Keyboard. Parts of the Computer. Parts of the Computer.

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Computer Parts

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  1. Computer Parts Computer Information Technology – Section 1-1

  2. Parts of the Computer • Objective: • To identify the parts of a computer and their uses

  3. Parts that are visible

  4. Parts that are visible Monitor Mouse Keyboard

  5. Parts of the Computer

  6. Parts of the Computer Wired LAN/Ethernet Connection Audio Connections Parallel Port USB Ports Serial Port SVGA/Monitor

  7. Newer Computers • Fewer Interfaces • No serial or Parallel • HDMI for video • Mix of USB3.0 and USB2.0

  8. Parts of the Computer • Definitions: • Bit: A single digit number in base-2 (a zero or a one) and is the smallest unit of computer data. • Byte: A byte is a set of 8 bits that represent a single character in the computer's memory. • Kilobyte (KB): One kilobyte is equal to 1,024 bytes. • Megabyte (MB): A megabyte is 1,024 kilobytes or 1,048,576 bytes • Gigabyte (GB): A gigabyte is 1,024 megabytes or 1,073,741,824 bytes • Terabyte (Tb): A terabyte is 1024 gigabytes or 1,099,511,627,776 bytes.

  9. How much data is that? • Bytes (8 bits) • 1 byte: One character • 10 bytes: One word (a word of language, not a computer word) • Kilobyte (1024 bytes) • 1 Kilobyte: Joke; (very) short story • 2 Kilobytes: Typewritten page • 10 Kilobytes: Page out of an encyclopedia • 100 Kilobytes: Photograph, low-resolution

  10. How much data is that? • Megabyte (1,048,576 bytes) • 1 Megabyte: Small novel; • 2 Megabytes: Photograph, high resolution • 5 Megabytes: Complete works of Shakespeare; 30 seconds of broadcast-quality video • 10 Megabytes: Minute of high-fidelity sound; • 100 Megabytes: Yard of books on a shelf; two encyclopedia volumes • 500 Megabytes: CD-ROM

  11. How much data is that? • Gigabyte (1,073,741,824 bytes) • 1 Gigabyte: symphony in high-fidelity sound; broadcast quality movie • 2 Gigabytes: 20 yards of books on a shelf • 20 Gigabytes: Audio collection of the works of Beethoven; • 50 Gigabytes: Library floor of books on shelves • 100 Gigabytes: Library floor of academic journals on shelves

  12. How much data is that? • Terabyte (1,099,511,627,776 bytes) • 1 Terabyte: all the X-ray films in a large technological hospital; 50,000 trees made into paper and printed • 2 Terabytes: Academic research library • 10 Terabytes: Printed collection of the U. S. Library of Congress • Petabyte (1,125,899,906,842,624 bytes ) • 2 Petabytes: All U. S. academic research libraries • 20 Petabytes: 1995 production of hard-disk drives • 200 Petabytes: All printed material; 1995 production of digital magnetic tape

  13. How much data is that? • Exabyte (1,152,921,504,606,846,976 bytes ) • 5 Exabytes: All words ever spoken by human beings. • Zettabyte (1,180,591,620,717,411,303,424 bytes ) • Yottabyte (1,208,925,819,614,629,174,706,176 bytes)

  14. Parts of the Computer • Definitions: • Serial Port: The serial port is a type of connection used for peripherals such as mice, gaming controllers, modems, and older printers. A serial port can only transmit one bit of data at a time, whereas a parallel port can transmit many bits at once. The serial port is typically the slowest port you'll find on a PC and has a top speed of about 1.3 Mbs or 1,382,400 bps.

  15. Parts of the Computer • Definitions: • Parallel Port: This interface is found on the back of older PCs and is used for connecting external devices such as printers or a scanners and is used for transmitting data in parallel, or more than one bit at a time. Parallel ports have a maximum speed of about 6 Mbs (megabytes per second) or 6,291,456 bps (bits per second).

  16. Parts of the Computer • Definitions: • USB Port: Universal Serial Bus. A personal computer external bus standard which can support up to 127 peripheral devices, can support plug-and-play (hot plugging). The speeds for USB ports depends on the type of the port:

  17. Parts of the Computer • Definitions: • SVGA: Super Video Graphics Array. A video display standard for color monitors. SVGA monitors display up to 16.7 million colors with resolutions up to 1,280 x 1,024 pixels. • Ethernet/LAN: Ethernet is a standard for connecting computers into a local area network (LAN). The most common form of Ethernet is called 10BaseT, which denotes a peak transmission speed of 10 Mbps using copper twisted-pair cable. Many networks are now 100Mbps or 1000Mbps

  18. Summary • There are many different external interfaces • Different uses • Different speeds Rest of Today • Complete Homework 1-1 – Put it in the “IN” folder on the shelf.

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