History of Computers - Television
Between 1924-1929 John Logie Baird invented the television which paved the road to computer monitors as well as scanners and programs such as YouTube and Picasa.
Contents
Overview
The television that was created by John Logie Baird began with simple moving pictures that were scanned into the television and thus could be sent and recieved. These images originally consisted of 30 lines of definition and got up to 240 lines of definition before he stopped the development of this black and white television. Work then began on a color television that consisted of 600 lines of definition a vast improvement over the 240 lined black and white televisions that preceded this. Although these clips of video could only be transmitted over a telephone line, it paved the road to color images being sent electronically.
To scan images and go from image to electronic current to image again a process known as rasterisation was used. This is a process that takes a 3-D image and puts it on a 2-D surface such as a television screen or computer monitor. This process has been developed to be more accurate and include shadings of not only black and white but color as well, and is still used today and most people use the LCD televsion.
Significance
Between 1924-1929 John Logie Baird developed the television starting with still images, progressing to moving images and later on even color. He got the images into the television by “scanning” images that could be then transmitted and received. This process used was rasterisation which is still used today and with Bairds use of this process it may not be as widely used and advanced as it is today. Not to mention that without the first TV there may not be scanning today because it was one of the first times scanning was used to transmit images. Without television and how it was able to display color images and transmit and receive information monitors may not exist today and thus information on the computer would not be able to be seen.
The use of images and videos in scanning is widely used today through photo-sharing programs as well as video-sharing programs. If it wasn't for the TV and the advancements that came with it, popular video sharing systems like picasa and YouTube would not exist.
References
General Information Used to Select Topic
Television and John Logie Baird Information
