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  • Octets : An Octet is a unit of eight bits
  • OE : Output Enable - control signal
  • OpenCL : OpenCL (Open Computing Language)
  • OpenGL : OpenGL is a cross-language, multi-platform API for rendering 2D and 3D computer graphics.
  • OpenGL ES : OpenGL for Embedded Systems is a subset of the OpenGL 3D graphics application programming interface (API) designed for embedded systems
  • Operation code : opcode (operation code), Several bits in a computer program instruction that specify which operation to perform.
  • Operating system : An operating system (OS) is a set of software that manages computer hardware resources and provide common services for computer programs.
  • optical disc drive : (OD or ODD) - is a disk drive that uses laser light or electromagnetic waves near the light spectrum as part of the process of reading or writing data to or from optical discs
  • optical disc drive emulator : (ODE or ODDE) - is a device that emulates the behaviour of an optical disc drive, thus allowing the loading of disk drive images and bypassing disc security
  • Orbis : The internal codename for the Playstation 4
  • OTP : One Time Pad