Memory

__**Memory** __

__**Definition-**__ the physical devices used to store data or programs (sequences of instructions) on a temporary or permanent basis for use in an electronic digital computer.


 * __History-__**The Manchester Baby [|computer] was very inportant becasue in 1948 it stored it programs on a form of RAM. It is so easy to start a new program now, but back then it would take weeks of rewiring for it to work. He used a storage devise called the Williams Tube. Durign the time of the post-war times Americans also used phosphor dots to store data.

**__Comparason of past and present devises-__**
When memory first stared with Manchester Baby and his Williams Tube, it didnt end like that. In the 1950's ‘core’ memory was introduced. I was used into the 1970's. The DRAM Chip model 1103 held only 1,024 bits, but it was about 25mm in length. When the Compact Disc was introduced in 1982, it held abouit 20MB.

Manchester Baby with his Wlliams Tube The DRAM Chip

__**Purpose-**__ If it wasn't for memory our computers/laptops would run slow and it would take a long time to start a new program. [] [] []