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IT Fundamentals: Input Devices & Data Storage Overview

Learn about various input devices used to capture information and commands in IT systems, including keyboards, barcode readers, sensors, and more. Explore how data is stored in RAM and secondary storage. Discover types of input devices and direct entry methods in IT fundamentals.

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IT Fundamentals: Input Devices & Data Storage Overview

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  1. SYSTEM STRUCTRE Control Unit works on programs/data in RAM POWER OFF ... RAM OFF Bye Bye Assignment However blocks of memory can be saved/read on secondary storage. IT Fundamentals

  2. Types of input IT Fundamentals

  3. Input/ Output Input device is a tool used to capture information and commands Examples include: • Keyboard • Point-of-sale (POS) • Microphone • Mouse • Pointing stick • Touch pad • Touch screen • Bar code reader • Optical mark recognition (OMR) • Scanner IT Fundamentals

  4. Examples of Direct Entry Input Devices Barcode Readers: Sit-in-the-Counter type - Reads standard or customised barcodes IT Fundamentals

  5. Other Input Devices Trackball - Similar to mouse Joystick - games? - Difficult to pinpoint a position Touch screens screen 'divided' into areas area selected by touch easy to use cannot have areas too small screens get dirty (many uses) TouchPad Pointing Stick Light Pen IT Fundamentals

  6. Other Input Devices • Sensors Pointing Devices Mouse measures x-y moveent plus whether button is pressed down… a. IT Fundamentals

  7. Input Devices • Most obvious = human + KEYBOARD • Need to be: Accurate, reliable and easy to • use, fast • Human and keyboard is the most used input device Machines make better input devices…. DIRECT ENTRY, or SOURCE DATA AUTOMATION. IT Fundamentals

  8. Input Types Data Collection Devices: Web Cams Video camera whose output displays on a web page Digital Camera a. IT Fundamentals

  9. Voice Input Voice Input IT Fundamentals

  10. Examples of Direct Entry Input Devices Scanners MICR : Used with cheques OMR : Tattslotto & TAB OCR : Scan type-written pages…. IT Fundamentals

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