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Most computers have a reset line that brings the device into the startup state and is active for a short time after powering on. For example, in the x86 architecture, asserting the RESET line halts the CPU; this is done after the system is switched on and before the power supply has asserted "power good" to indicate that it is ready to supply ...
In computing, the reset vector is the default location a central processing unit will go to find the first instruction it will execute after a reset. The reset vector is a pointer or address , where the CPU should always begin as soon as it is able to execute instructions.
A modern PC's UEFI or BIOS firmware supports booting from various devices, typically a local solid-state drive or hard disk drive via the GPT or Master Boot Record (MBR) on such a drive or disk, an optical disc drive (using El Torito), a USB mass storage device (USB flash drive, memory card reader, USB hard disk drive, USB optical disc drive ...
Compaq Presario 425 all-in-one (1993) In September 1993, Compaq introduced the Compaq Presario brand of IBM PC–compatible computers as the company's first foray into the retail computer market with the release of three models: the all-in-one 400 series, the horizontal desktop 600 series, and the tower-based 800 series.
By November 1983, the PC-8801 had shipped 170,000 units. [7] The PC-8801's direct successor, the PC-8801mkII, came with a JIS level 1 kanji font ROM, a smaller case and keyboard, and, in the models 20 and 30, one or two internal 5 1 ⁄ 4-inch 2D floppy disk drives. This set of PC-8800 computers sold more units than the PC-9800 series at that ...
IBM's PS/2 was designed to remain software compatible with their PC/AT/XT line of computers upon which the large PC clone market was built, but the hardware was quite different. PS/2 had two BIOSes : one named ABIOS (Advanced BIOS) which provided a new protected mode interface and was used by OS/2, and CBIOS (Compatible BIOS) which was included ...
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The first EEPROM that used Fowler-Nordheim tunnelling to erase data was invented by Bernward and patented by Siemens in 1974. [24] In February 1977, Israeli-American Eliyahou Harari at Hughes Aircraft Company patented in the US a modern EEPROM technology, based on Fowler-Nordheim tunnelling through a thin silicon dioxide layer between the floating-gate and the wafer.