Computing and computers

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        Computing and computers

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            Computing and computers

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              Wafer of Intel Pentium 4 Prescott Chips
              Heritage collection CERN-OBJ-CERN-OBJ-IT-084 · Pièce
              Fait partie de Heritage Collection Test

              Silicon wafer with hundreds of Penryn cores (microprocessor). There are around four times as many Prescott chips can be made per wafer than with the previous generation of Northwood-core Pentium 4 processors. It is faster and cheaper.

              A Diode Matrix model M792
              Heritage collection CERN-OBJ-CERN-OBJ-IT-095 · Pièce
              Fait partie de Heritage Collection Test

              A diode matrix is an extremely low-density form of read-only memory. It's one of the earliest forms of ROMs (dating back to the 1950s). Each bit in the ROM is represented by the presence or absence of one diode. The ROM is easily user-writable using a soldering iron and pair of wire cutters.This diode matrix board is a floppy disk boot ROM for a PDP-11, and consists of 32 16-bit words. When you access an address on the ROM, the circuit returns the represented data from that address.

              6250 BPI IBM reduce version 3.3
              Heritage collection CERN-OBJ-CERN-OBJ-IT-098 · Pièce · 1988
              Fait partie de Heritage Collection Test

              These are magnetic coil bands designed by IBM with 6250 BPI. BPI means bits per inch and specifies the data density a magnetic coil can hold.

              Seagate ST-225 Hard Drive
              Heritage collection CERN-OBJ-CERN-OBJ-IT-103 · Pièce · 1984
              Fait partie de Heritage Collection Test

              This hard drive was developed by Seagate in 1984, and had a capacity of 20 MB. It was the single most common 20MB drive ever to be produced.

              Weston Standard battery
              Heritage collection CERN-OBJ-CERN-OBJ-IT-113 · Pièce
              Fait partie de Heritage Collection Test

              This is a Weston AOIP standard battery with its calibration certificate (1956). Inside, the glassware forms an "H". Its name comes from the British physicist Edward Weston. A standard is the materialization of a given quantity whose value is known with great accuracy.