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Another ATX addition was the +5 V SB (standby) rail for providing a small amount of standby power, even when the computer was nominally "off". When a computer is in ACPI S3 sleep mode, only +5 V SB rail is used. There are two basic differences between AT and ATX power supplies: the connectors that provide power to the motherboard, and the soft ...
PDP-11 CPU board. Computer hardware includes the physical parts of a computer, such as the central processing unit (CPU), random access memory (RAM), motherboard, computer data storage, graphics card, sound card, and computer case. It includes external devices such as a monitor, mouse, keyboard, and speakers. [1] [2]
The Gateway HandBook remains one of the smallest laptops ever produced and was a precursor to Netbooks such as the Asus Eee PC, the Dell Inspiron Mini Series, and the Acer Aspire One. The Acer Aspire One is about the same size as the HandBook, and exists in a Gateway-branded form as the Gateway LT1004u.
Feeling that they could offer such computers for half the cost, Gateway 2000 released a complete PC compatible system with dual 5.25-inch floppy drives, ample RAM, a color monitor, and a keyboard, for $1,995 through mail-order. The system was a success for Gateway 2000, with revenue increasing from $1.5 million in 1987 to $12 million in 1988.
Hot swapping is the replacement or addition of components to a computer system without stopping, shutting down, or rebooting the system; [1] hot plugging describes the addition of components only. [2] Components which have such functionality are said to be hot-swappable or hot-pluggable; likewise, components which do not are cold-swappable or ...
Computer memory used in most contemporary computer systems is built mainly out of DRAM cells; since the layout is much smaller than SRAM, it can be more densely packed yielding cheaper memory with greater capacity. Since the DRAM memory cell stores its value as the charge of a capacitor, and there are current leakage issues, its value must be ...
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The first documented computer architecture was in the correspondence between Charles Babbage and Ada Lovelace, describing the analytical engine.While building the computer Z1 in 1936, Konrad Zuse described in two patent applications for his future projects that machine instructions could be stored in the same storage used for data, i.e., the stored-program concept.
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