1. Computer Input Output
... mice are fairly recent, another type of optical mouse has been around for over a decade. The original optical-mouse technology bounced a focused beam of light off a highly-reflective mouse pad onto a sensor. The mouse pad had a grid of dark lines. Each time the mouse was moved, the ... to its relative cost and availability then to any technological superiority. RASTER-SCAN-CRT: A raster scan display device using CRT on the other hand directs the electron beam across the screen , one row at a time from top to bottom. In a raster scan display device, the screen is assumed to consists of a ...
- Word Count: 2738
- Approx Pages: 11
- Grade Level: High School