CSC 105 Computer Concepts Module 2 PDF

CSC 105 Semester 451 Computer Concepts Module 2 Computer Hardware 1  Learning Objectives (Slide 1 of 2) Identify and describe how to use input devices Name different types of display devices, and explain their key features Describe different ty...

CSC 105 Semester 451 Computer Concepts Module 2 Computer Hardware 1  Learning Objectives (Slide 1 of 2) Identify and describe how to use input devices Name different types of display devices, and explain their key features Describe different types of printers, and the advantages and disadvantages of each Identify and explain the different storage devices and their corresponding storage media 2 CSC 105- Semester 451  Learning Objectives (Slide 2 of 2) Explain the advantages and disadvantages of magnetic, optical, and solid-state storage systems Explain optical storage options Describe the different types of solid-state cards and drives Identify expansion ports and expansion cards, and explain how to use them 3 CSC 105- Semester 451  Input Devices (Slide 1 of 3) Input Device is a computer hardware that you use to communicate with the computer that includes : Keyboards Type letters and numbers Navigation keypad – Moves the insertion point - includes keys such as the Home, End, and arrow keys Mouse Controls on-screen pointer Optical mouse: uses an LED (an electronic light) to track mouse movement Laser mouse: uses a laser as the light source to track mouse movement. 4 CSC 105- Semester 451 Input Devices (Slide 2 of 3) 5 CSC 105- Semester 451  Input Devices (Slide 3 of 3) Other pointing devices Touchpad (also called a trackpad) – touch-sensitive surface Trackball – a roller ball on the top of a mouse Touch screen - Virtual keyboard Other ways to input data Scanner Microphone Digital camera 6 CSC 105- Semester 451  Display Devices (Slide 1 of 4) Monitor Standalone display device Found with desktop computers Screen Area where output is displayed - Monitors attached to desktop computers have screens - Notebook, netbook, tablet, smartphone and other mobile devices have screens LCD (liquid crystal display) Manipulates light within a layer of liquid crystal cells LED (light emitting diodes) uses light emitting diodes for the backlighting. 7 CSC 105- Semester 451  Display Devices (Slide 2 of 4) Graphics card Contains circuitry that displays images contains special memory, which stores images as they are processed before display Response rate - Speed at which screens update displays Resolution - Maximum number of displayed horizontal and vertical pixels Pixel (picture element) - Smallest unit in a graphic image - Each pixel fills one cell of the grid 8 CSC 105- Semester 451  Display Devices (Slide 3 of 4 ) Screen size Measured diagonally in inches Aspect ratio Proportional relation between width and height 4:3 was the standard for television and screens on the first generation of PCs. 16:9 is designed for today’s widescreen devices, such as notebooks and smart- phones. 9 CSC 105- Semester 451 Display Devices (Slide 4 of 4) Comparing Aspect Ratios 10 CSC 105- Semester 451  Printers (Slide 1 of 3) Hard copy Printed output Soft copy Output viewed with a display device Ink-jet printer Sprays ink onto paper Laser printer Toner cartridges Produces dots of light on light-sensitive drum 11 CSC 105- Semester 451 Printers (Slide 2 of 3) Ink-jet Laser 12 CSC 105- Semester 451  Printers (Slide 3 of 3) Printer resolution - Determines the quality of printed output - Measured in dots per inch (or dpi) Printer speed - Pages per minute (ppm) Duplex printer - Prints on both sides of paper Network-enabled printer : connected directly to network (wired or wireless) and configure network printing for multiple users. Photo printer : produce professional-quality images on specialized papers 3D printer : prints 3D objects such as a toy or replacement part based on a design. 13 CSC 105- Semester 451  Data Storage— An Overview (Slide 1 of 3) ❖ A data storage system – two main parts: a storage device and a storage medium. Storage device Equipment that stores and retrieves data from its storage medium - Hard drive, card reader, flash drive, optical drive, solid-state card readers Storage medium Technology that holds data - Hard drives, memory cards, flash drives, CDs, DVDs, Blue-ray discs Can be two separate parts or self-contained 14 CSC 105- Semester 451  Data Storage— An Overview (Slide 2 of 3) Hard drives – internal or external Main storage system for PCs Can be mechanical or solid state drives (SSD) - Mechanical drives have moving parts - Solid state technology – No moving parts Additional storage devices USB flash drives CD/DVD/BD drives Solid-state card readers 15 CSC 105- Semester 451  Data Storage— An Overview (Slide 3 of 3) Inside a mechanical hard drive 16 CSC 105- Semester 451  Data Storage Systems Features (Slide 1 of 2) Storage capacity Maximum amount of data that can be stored Measured in megabytes (MB), gigabytes (GB), or terabytes (TB) Access time Average time to locate data on the storage medium and read it Measured in milliseconds (thousandths of a second, abbreviated as ms) Data transfer rate Amount of data moved from the storage medium per second. 17 CSC 105- Semester 451  Data Storage Systems Features (Slide 2 of 2) Magnetic storage Stores data by magnetizing microscopic particles on the disk or tape surface Hard drives Optical storage Data stored as microscopic light and dark spots on the disc surface CDs, DVDs, and BDs Solid-state storage Data stored in a nonvolatile, erasable, low-power chip Used in digital cameras, MP3 players, compact storage cards – memory cards, thumb drives – flash drives, memory sticks, and some hard drives. 18 CSC 105- Semester 451  Optical Data Storage Systems (Slide 1 of 1) CD-ROM – Read-only technology DVD-ROM, BD-ROM (Blu-ray, 25 to 50 GB) CD-R – CD recordable technology (write in multiple sessions but not erase) DVD-R/DVD+R, BD-R CD-RW - CD rewritable technology (record and erase) DVD-RW/DVD+RW, BD-RE A computer system can have a CD drive, DVD drive, or BD drive Not a replacement for a hard drive 19 CSC 105- Semester 451  How to Add Devices to Your Computer Expansion card: Small circuit board allowing computers to communicate with a peripheral devices Expansion slot: Slot on motherboards where expansion cards are plugged Expansion port: Part of expansion card Connector passing data between a computer and a peripheral device - Graphics ports, FireWire ports, Ethernet network ports, - USB (Universal Serial Bus) ports. - Etc. 20 CSC 105- Semester 451