Definition updating

Since 1996, most automobiles have employed an on-board computer and various sensors to detect mechanical problems.As of 2010, modern vehicles also employ computer-controlled anti-lock braking systems (ABS) and computer-operated transmission control units (TCUs).The Apollo guidance computer had firmware consisting of a specially manufactured core memory plane, called "core rope memory", where data was stored by physically threading wires through (1) or around (0) the core storing each data bit.Originally, it meant the contents of a writable control store (a small specialized high speed memory), containing microcode that defined and implemented the computer's instruction set, and that could be reloaded to specialize or modify the instructions that the central processing unit (CPU) could execute.A television remote control is an example of an engineered product that contains firmware.The firmware monitors the buttons, controls the LEDs, and processes the button presses to send the data in a format the receiving device, in this case, a television set, can understand and process.The availability of a new version is checked when an Internet connection is established, and every four hours afterwards.Update files can also be downloaded from these pages if required e.g.

Some companies use firmware updates to add new playable file formats (codecs).This may require ROM integrated circuits to be physically replaced or flash memory to be reprogrammed through a special procedure.Firmware such as the ROM BIOS of a personal computer may contain only elementary basic functions of a device and may only provide services to higher-level software.Firmware can either provide a standardized operating environment for the device's more complex software (allowing more hardware-independence), or, for less complex devices, act as the device's complete operating system, performing all control, monitoring and data manipulation functions.Typical examples of devices containing firmware are embedded systems, consumer appliances, computers, computer peripherals, and others.

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