In electronics, a Dekatron (or Decatron, or generically three-phase gas counting tube or glow-transfer counting tube or cold cathode tube) is a gas-filled...

The Harwell computer, or Harwell Dekatron computer, later known as the Wolverhampton Instrument for Teaching Computing from Harwell (WITCH), is an early...

Video camera tube Williams tube Gas-filled tubes Cold cathode Crossatron Dekatron Ignitron Krytron Mercury-arc valve Neon lamp Nixie tube Thyratron Trigatron...

Atomic Energy Research Establishment at Harwell, UK built the Harwell Dekatron Computer in 1951, which was an automatic calculator where the decimal arithmetic...

As well as first generation computers including the original Harwell Dekatron computer – the world's oldest working digital computer – Mainframe computers...

Lighting system Neon and argon lamps – Light source based on gas discharge Dekatron – Early and obsolete type of computer memory Nixie tube – Electronic numeric...

Obsolete: Incandescent filament 7 segment display (aka 'Numitron') Nixie tube Dekatron (aka glow transfer tube) Magic eye tube indicator Penetron (a 2 colour...

and a 2-state ring counter). A few tube computers -- such as the Harwell Dekatron Computer -- use a single Decatron tube per decimal digit. Early systems...

Video camera tube Williams tube Gas-filled tubes Cold cathode Crossatron Dekatron Ignitron Krytron Mercury-arc valve Neon lamp Nixie tube Thyratron Trigatron...

Delay-line memory (1947) Mellon optical memory (1951) Selectron tube (1952) Dekatron T-RAM (2009) Z-RAM (2002–2010) Non-volatile ROM Diode matrix MROM PROM...