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HARDWARE INPUT DEVICES ITGS. Strand 3.1 Hardware Input Devices Keyboards Pointing devices: Mice Touch pads Reading tools: Optical mark recognition (OMR)

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Presentation on theme: "HARDWARE INPUT DEVICES ITGS. Strand 3.1 Hardware Input Devices Keyboards Pointing devices: Mice Touch pads Reading tools: Optical mark recognition (OMR)"— Presentation transcript:

1 HARDWARE INPUT DEVICES ITGS

2 Strand 3.1 Hardware Input Devices Keyboards Pointing devices: Mice Touch pads Reading tools: Optical mark recognition (OMR) Optical character recognition (OCR) Magnetic ink character recognition (MICR) Radio frequency identification (RFID), radio tag Bar code scanners Magnetic Stripe Readers Smart card readers

3 Keyboard Sends signals to computer (via cables or wireless ) Straight Unnatural Repetitive stress injuries Ergonomic Natural position Reduce risk of R.S.I. Image 1 Image 2

4 Image 3 Keyboard Types Image 4 Image 5

5 Mouse Designed to move a pointer around the screen and point to specific characters or objects. Reflected light used to detect movement. Image 6

6 Touch pad/ Track Pad Small, flat panel sensitive to light pressure. Image 7

7 Optical Mark Recognition (OMR) Reads marks made by pencil on a printed form into the computer. Image 8

8 Optical Character Recognition (OCR) Recognizes individual characters on a printed page, so they can be stored and edited as a text. Image 9

9 Magnetic Ink Character Recognition (MICR) Magnetic ink characters appear at the bottom of checks. Banks use MICR to read the numbers from the bottom of checks to obtain data such as account numbers and bank sort codes. A particular font is used that makes it easy for the machine to discriminate between characters. The ink is magnetized; this makes it immune to creases and dirty marks. Image 10Image 11

10 Bar Code Scanners Barcodes are represented by black vertical bars and are read by a barcode reader. Barcodes are printed on nearly every product you buy; each product has a unique code. When read, information stored in the shop's database is recalled, such as the product name and price. This information later appears on your receipt. The scanning process also assists in stock management, reducing the stock by one each time a product is scanned/sold. Image 13 Image 12

11 Magnetic Stripe Reader Magnetic stripes are built into many plastic cards such as debit or credit cards and personal identity cards. The magnetic strip on the back of the card can hold the personal details of the card owner and, with the necessary PIN, will allow access to secure information, e.g. bank account details. Data stored on the strip is scanned and input into a computer system by a magnetic stripe reader. Image 14 Image 15

12 Future Items ROLL-TOP

13 Bibliography Image 1 n.d. 1 September Image 2 n.d. 1 September Image 3 n.d. 1 September Image 4 n.d. 1 September Image 5 n.d. 1 September Image 6 n.d. 1 September Image 7 n.d. 1 September Image 8 n.d. 1 September Image 9 n.d. 1 September Image 10 n.d. 1 September Image 11 n.d. 1 September Image 12 n.d. 1 September Image 13 n.d. 1 September Image 14 Image 15 n.d. 1 September 2010.


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