History of computer storage devices

Now you may all be familiar with gigabytes of storage, but you may not have thought that 20 would be the size of a refrigerator. Today's Royal Pingdom Web site wrote an article on the history of computer storage devices, in the form of a photo review of previous history, and interested friends to see.

Select the number of tubes

The number of selected tubes is 256 to 4096 bits, of which 4096 bits are 10 inches long and 3 inches wide. Originally developed in the 1946, the equipment was not widely used because of its high cost. The following figure is a 1024-bit selection tube.

Punched cards

Punched cards are used to enter data and programs until the middle of the 70. The following figure is a Fortan program expression Z (1) = Y + W (1)

Perforated tape

Probably many middle-aged readers are not unfamiliar with punched tape, which is used to input data and the output is also on punched tape. Each row represents one character.

Magnetic drum Memory

Originally created in Austria in 1932, it was widely used in the 560 's, usually as memory, with a capacity of around 10kB.

123 Next full article Navigation 1th page: After 20: A historical review of computer storage devices page 2nd: Hard Drive 3rd page: Tape