1. Hardware, Software & Automatic input devices LO: Recognise hardware, software. Learning outcome: Correctly identify hardware and software. Recognise and explain some of the most commonly confused software applications. Lesson 2

2. Hardware or software? Hardware Software Hardware AND software

3. Definitions hardware(n.)(computer science) the mechanical, magnetic, electronic, and electrical components making up a computer system Easier definition: If you can break it with a hammer, it’s hardware. Hardware… Software… software(n.)(computer science) written programs or procedures or rules and associated documentation pertaining to the operation of a computer system and that are stored in read/write memory Easier definition: If you can double-click it, or infect it with a computer virus, it’s software. (Don’t get it confused with data)

4. Definition Data… software(n.)(computer science) a single piece of information, as a fact, statistic, or code; Plural of Datum Easier definition: The stuff the computer needs to use or change

5. What is the difference between data and information? AnneYes- BobNoYes CraigNo Without a context, data has no meaning NamePresent?Absence Authorised? AnneYes- BobNoYes CraigNo

6. What’s the problem in entering large amounts of data via the keyboard? Question: It involves people. People are slow, inefficient and make mistakes. Answer: Automatic input devices are needed!!

7. Three automatic input devices and software easily confused … OCR OMR MICR Optical Character Recognition Optical Mark Recognition Magnetic Ink Character Rec.

8. OCR OCR is used to scan in a page of text, then convert it to a form where it can be edited for example in a Word Processor Optical Character Recognition

9. OMR Optical Mark Recognition National Lottery Tickets Multiple choice exam papers OMR is used to read a mark (usually made by pencil) on a page in a particular position.

10. MICR Magnetic Ink Character Recognition MICR enables a computer to accurately read numbers from a page. MICR numbers are also readable by humans.

11. Three input devices and software easily confused … OCR OMR MICR Optical Character Recognition Optical Mark Recognition Magnetic Ink Character Rec.

12. Advantages/Disadvantages DeviceAds Disads  OCR OMR MICR Can read ‘normal’ English text Need to scan in Difficult to use Large file size Errors with reading Very accurate Easy to use Fast Limited applications Needs special ‘forms’ Very accurate Can use numbers Human Readable Specialist printing equip. Not good for large amounts

13. Guess the input device ABC