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The 10cm diameter chamber made by Charles Peyrou was the first liquid hydrogen bubble chamber built at CERN.

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.

Records documenting the management, operation, and maintenance of CERN buildings and facilities. The series includes administrative files, technical documentation, maintenance records, contracts, reports, correspondence, and plans relating to building infrastructure across the CERN site.

central region of the ion source for the synchro-cyclotron