Computing and computers

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              6250 BPI IBM reduce version 3.3
              CERN-OBJ-IT-098 · Item · 1988
              Parte 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
              CERN-OBJ-IT-103 · Item · 1984
              Parte 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
              CERN-OBJ-IT-113 · Item
              Parte 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.
              PM 3655 PHILIPS Logic analyzer
              CERN-OBJ-IT-114 · Item
              Parte de Heritage Collection Test

              A logic analyzer is an electronic instrument that captures and displays multiple signals from a digital system or digital circuit. A logic analyzer may convert the captured data into timing diagrams, protocol decodes, state machine traces, assembly language, or may correlate assembly with source-level software. Logic Analyzers have advanced triggering capabilities, and are useful when a user needs to see the timing relationships between many signals in a digital system.
              CERNET Interface Card
              CERNET Interface Card
              CERN-OBJ-IT-015 · Item · 1978
              Parte de Heritage Collection Test

              Homegrown networking technology pre-dating the internet. This is a CERNnet card developed and built at CERN. There was a lot of space on the card between the components, so the engineers decided to put their portraits on it.
              10BASE5 Ethernet Cable & Vampire Tap
              10BASE5 Ethernet Cable & Vampire Tap
              CERN-OBJ-IT-016 · Item · 1983
              Parte de Heritage Collection Test

              10BASE5 Thick Ethernet Cable, 10Mbit/sec. In the 1980s and early 1990's, Ethernet became more popular and provided a much faster data transmission rate. This cable is one of the first ethernet cables from 1983, a thick, bulky affair. Computers were attached via "Vampire Taps" which were connectors screwed straight through the shielding of the cable.
              CDC 7600 Module
              CDC 7600 Module
              CERN-OBJ-IT-023 · Item · 1970
              Parte de Heritage Collection Test

              The CDC 7600 has been created by Seymour Cray. It was designed to be compatible with the 6600, which allows for a substantial increase in performance. Furthermore the rise of new technologies has enabled this performance by reducing the minor cycle clock period from 100 ns to 27.5 ns (4 time faster). A very large machine, the 7600 had over 120 miles of hand-wired interconnections. It was the most powerful computer of its time. However, this speed caused a ground-loop problem causing intermittent faults, and eventually requiring all modules to be fitted with sheathed rubber bands. The CDC 7600 was replaced in 1983 by CRAY-1A.
              IBM 3705 Communications Controller
              IBM 3705 Communications Controller
              CERN-OBJ-IT-027 · Item · 1972
              Parte de Heritage Collection Test

              The IBM 3705 Communications Controller is a simple computer which attaches to an IBM System/360 or System/370. Its purpose is to connect communication lines to the mainframe channel. It was a first communications controller of the popular IBM 37xx series.