Computer Skills & Programming Concepts I Lecture 6
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Questions and Answers

What are the three main types of storage devices covered in the lecture?

  • Magnetic, Laser Beam, Electrons
  • Hard Drive, Optical Discs, Flash Memory (correct)
  • Internal, External, Remote
  • Network Storage, Cloud Storage, Smart Cards

A hard drive can be either internal or external.

True (A)

What type of storage device uses laser beams to read and write data?

  • Hard Drive
  • Flash Memory
  • Magnetic Tape
  • Optical Discs (correct)

What is the name given to the process of writing data onto an optical disc?

<p>Burning (B)</p> Signup and view all the answers

Which of the following are examples of flash memory chips embedded into products? (Select all that apply)

<p>GPS devices (A), Handheld gaming devices (B), Digital cameras (C), Portable digital media players (D), Mobile phones (E)</p> Signup and view all the answers

A flash memory card can only be written to, not read from.

<p>False (B)</p> Signup and view all the answers

What is the main difference between a hard drive and a Solid-State Drive (SSD)?

<p>Hard drives use spinning magnetic disks to store data, while SSDs use flash memory chips.</p> Signup and view all the answers

Which of the following are types of embedded computers? (Select all that apply)

<p>Microwave ovens (A), Washing machines (B), Digital watches (D)</p> Signup and view all the answers

A laptop is a type of mobile computer.

<p>True (A)</p> Signup and view all the answers

Which of the following factors affect computer performance? (Select all that apply)

<p>CPU speed (A), Video graphic display (C), Storage capacity (D)</p> Signup and view all the answers

The faster the CPU speed, the slower the computer will run.

<p>False (B)</p> Signup and view all the answers

What is the unit of measurement for RAM size?

<p>MB (MegaBytes) or GB (GigaBytes)</p> Signup and view all the answers

Swap files are used to simulate extra memory on a computer.

<p>True (A)</p> Signup and view all the answers

What is the name of the computer category that is the most powerful and expensive?

<p>Supercomputers</p> Signup and view all the answers

Flashcards

Output Devices

Devices that display or present information to the user.

Display Devices

Output devices that show visual information, like monitors and screens.

Touch Screen

A display that acts as both input and output.

Wearable Displays

Display technology integrated in wearable devices, like glasses.

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LCD

A display technology using liquid crystals between sheets.

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LED Displays

Displays using LEDs for backlighting, often used with LCDs.

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Projection Devices

Devices showing presentations on a large screen.

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Printers

Output devices that print text and images on paper.

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Impact Printers

Printers that use physical impact to print.

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Ink-Jet Printers

Printers spraying ink to create images.

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Laser Printers

Printers using laser beams and toner for printing.

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Special Purpose Printers

Printers for specific tasks like barcode or 3D printing.

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Speakers & Headphones

Output devices that produce sound.

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Storage Devices

Hardware that stores data.

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Storage Medium

The physical material that stores data.

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Hard Drive

A primary storage device for data and programs.

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Optical Discs

Storage that uses a laser beam.

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Flash Memory

Solid-state storage using electronic circuits.

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Network Storage

Storage accessible over a network.

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Cloud Storage

Online storage and access using the internet.

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Smart Cards

Cards that store data and often have security features.

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Magnetic Storage

Uses magnetic fields to store data.

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Laser Storage

Uses laser beams for recording.

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Electronic Storage

Uses electrons for storage

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Internal Hard Drive

A hard drive permanently installed within a computer.

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External Hard Drive

A hard drive that connects to a computer via a cable or wirelessly.

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Read-Only Optical Disc

Optical discs that cannot be modified.

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Recordable Optical Disc

Optical discs that can be written to, but not erased.

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Rewritable Optical Disc

Optical discs that can be overwritten many times.

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Study Notes

Course Information

  • Course Title: Computer Skills & Programming Concepts I
  • Course Codes: UEC01, PCD104, PCC104, HGCP101
  • Lectures: 1-6
  • Course Coordinator: Assoc. Prof. Mohamed Ismail Badawi
  • Instructors: Mohamed Ahmed Taha, Maher Habashy, Angy Saleh, Yasser Abd El Aziz, Reham Refaat, Nehal Essam

Lecture 6 - Output Devices

  • Topic: Output Devices
  • Lecture Number: 6
  • Key Concepts: Includes output devices like:
    • Display Devices (Monitors, Touch Screens, Wearable Displays, Touch & Gesture, Mobile Devices, Liquid Crystal Displays (LCDs), Light Emitting Diode (LED) Displays, Projection Devices)
    • Printers (Impact Printers (Dot Matrix), Non-Impact Printers, Ink-Jet Printers, Laser Printers, Special Purpose Printers (Barcode, Label, Postage, Photo, 3D))
    • Speakers and Headphones

Storage Systems

  • Topic: Storage Systems
  • Types:
    • Hard Drive
    • Optical Discs
    • Flash Memory
    • Network Storage
    • Cloud Storage
    • Smart Cards
    • Magnetic Tape
  • Characteristics:
    • Storage medium is hardware where data is stored and typically identified by a capital letter (e.g., C:, D:).
    • Storage can be internal, external, or remote.
    • Storage media are non-volatile.
    • Storage technologies: Magnetic (hard drives), Laser beam (optical discs), Electrons (flash memory).

Storage System Characteristics

  • A storage system consists of a storage device and a storage medium.
  • Storage medium is the hardware where data is stored (e.g., DVD, flash memory card).
  • Storage devices typically are identified by a capital letter (e.g., C, D).
  • Storage can be internal, external, or remote.
  • Storage media are non-volatile.

Hard Drives

  • Used to store programs and data.
  • Can be encrypted.
  • External hard drives are used for transporting data.
  • Internal hard drives are permanent storage.

Optical Discs

  • Data stored optically using laser beams.
  • Used for backups, storing and transporting music, photos, video, etc.
  • Recording data is called burning.
    • Read-only discs (e.g., CD-ROM, DVD-ROM, BD-ROM)
    • Recordable discs (e.g., CD-R, DVD-R, DVD+R, BD-R)
    • Rewritable discs (e.g., CD-RW, DVD-RW, DVD+RW, BD-RE)

Optical Disc Capacity

  • Different disc types (CD, DVD, BD) have varying capacities (e.g., CD-700 MB, DVD - 4.7 GB, BDXL 128 GB).

Flash Memory Storage Systems

  • Chip-based storage medium using electrons.
  • Used in Solid State Drives (SSDs) and hybrid hard drives.
  • Embedded in many devices (portable media players, cameras, phones, sunglasses).
  • Flash memory cards and USB flash drives are common portable storage.

Computer Categories

  • Computers classified by size, speed, cost, portability, simultaneous users, and typical use.
    • Embedded computers - performed specific tasks within a product.
    • Mobile computers - small devices powered by batteries(Laptops, Tablets, PDAs, Mobile phones).
    • Microcomputers - personal computers (desktops, towers, all-in-one)
    • Minicomputers - medium-sized computers used to host programs and data for a small network
    • Mainframe computers - large, expensive multi-user computers for large organizations.
    • Supercomputers - the fastest and most powerful computers, used for complex tasks. (satellites, weather, oil exploration, and scientific research)

Factors Affecting Computer Performance

  • CPU speed (how fast the computer runs) measured in MHz or GHz; number of cores, bus speed, and cache size.
  • Storage capacity (RAM) measured in MBs or GBs and speed is measured in nanoseconds (NS).
  • Hard disk storage is measured in Gbytes and speed in milliseconds (MS). Swap files on the hard drive are used to simulate more/faster RAM.

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Lecture 6 I- Computer Essentials Cont'd PDF

Description

This quiz covers Lecture 6 of the Computer Skills & Programming Concepts I course, focusing on output devices and storage systems. Topics include various display devices, printers, and types of storage systems, ranging from hard drives to cloud storage solutions. Test your understanding and preparation of these essential computer components.

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