Direct Data Entry Computer Systems Basic 8.pptx

Direct Data Entry Computer Systems for Basic 8

1. The Computer System

2. The Computer System

3. Input Devices Direct Data Entry Devices (DDED) data is read directly from Sources Examples: Graphic Tablet Magnetic Card Optical Card Reader Quick Response (QR) Code Reader Radio Frequency Identification (RFID) Reader

4. How to Generate a QR Code Launch your browser Goto me- qr.com / qr -code-generator Select the File Type Upload your file Name your QR-Code Customize your QR Code Click Download.

5. Output Devices (Printers) Impact Non-Impact

6. Differences between Impact and Non-Printers Parameters Impact Non-Impact Mechanism In impact printers, printing is executed by hammering a character dye or metal pin. In non-impact printers, printing is executed by dropping ink on paper in any manner. Speed Of Printers Impact printers are low in terms of speed. Non-impact printers are comparatively fast in speed. They can print several pages in one minute. Noise Of Printers They produce high-level noise as they have many moving parts. They have a low level of noise. Print Quality The print quality of impact printers is lower. The print quality of non-impact printers is higher. Printing Ink When print head strikes, then they prefer special inked ribbons to produce print on paper. They prefer cartridges or toner for printing on paper.