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Advanced Configuration and Power Interface (ACPI) is an open standard that operating systems can use to discover and configure computer hardware components, to perform power management (e.g. putting unused hardware components to sleep), auto configuration (e.g. Plug and Play and hot swapping), and status monitoring. It was first released in ...
Windows Vista introduced a hybrid sleep feature, which saves the contents of memory to hard disk but instead of powering down, enters sleep mode. If the power is lost, the computer can resume as if hibernated. Windows 7 introduced compression to the hibernation file and set the default size to 75% of the total physical memory. [18]
In computing, an input–output memory management unit (IOMMU) is a memory management unit (MMU) connecting a direct-memory-access–capable (DMA-capable) I/O bus to the main memory. Like a traditional MMU, which translates CPU -visible virtual addresses to physical addresses , the IOMMU maps device-visible virtual addresses (also called device ...
HP Spectre x2 (model no. 12-A) is a 12-inch convertible released in 2015 and features a fanless Intel Core M processor. [49] The second generation x2 (model no. 12-C) was announced in 2017. It moved away from the lower power Core M to the higher Core i series, offered up to i7. It has a 12.3-inch 3000x2000 IPS display. [50]
HP EliteBook is a line of business-oriented laptop computers made by Hewlett-Packard (), [1] marketed as a high-end line positioned above the ProBook series. [2] The line was introduced in August 2008 [3] [4] as a replacement of the HP Compaq line of business laptops, and initially included mobile workstations until September 2013, when they were rebranded as HP ZBook.
Screen Weight (kg) Size (in) Resolution (pixels) Model Cores GHz ProBook 4310s [7] Intel Core 2 Duo T6670 2 2.2 3 GB Intel Graphics Media Accelerator 4500MHD 13.3 1366 x 768 2.06 ProBook 4311s [8] Intel Core 2 Duo P7570 2.26 2 GB ATI Mobility Radeon HD 4330 1.97 ProBook 4410s [9] [10] Intel Core 2 Duo T6570 2.1 14 2.27 ProBook 4411s [11] [12]
Memory management (also dynamic memory management, dynamic storage allocation, or dynamic memory allocation) is a form of resource management applied to computer memory.The essential requirement of memory management is to provide ways to dynamically allocate portions of memory to programs at their request, and free it for reuse when no longer needed.
Direct memory access (DMA) is a feature of computer systems that allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU). [ 1 ] Without DMA, when the CPU is using programmed input/output , it is typically fully occupied for the entire duration of the read or write operation, and is thus ...