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Some Remarks About a Photo-Digital Storage Device

机译:关于光电数字存储设备的一些注释

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The IBM-1360 is a photo-digital storage device. It records basically digital or numerical information by exposing film to an electron beam which moves under the control of data supplied by an associated computer. The basic element on which data is recorded is a small piece of film called a chip - about 35 by 70 millimeters. One chip can hold nearly five million bits of data or nearly six hundred thousand alphabetic characters if the currently popular encoding of 8 bits per character is used. This is enough encoded alphabetic information to record more than 500 pages of the New Yorker Magazine. For storage in the 1360, thirty-two of these film chips are placed in individual slots in a little box called a cell. A cell is about one inch by one-and-a-half inch by three inches, so that you may comfortably grasp in one hand about thirty-two volumes of 500 pages each. The 1360 configuration at Livermore can store nearly 7000 of these cells for rapid access by our computers. (Author)

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