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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.
The PIIX4 introduced ACPI support, an improved IDE controller with Ultra DMA/33 support, and an integrated MC146818 style RTC and CMOS controller. It was used with the 430TX and the 440LX Balboa northbridges. The PIIX4E updated the ACPI support. It was mainly used in 440BX and 440GX chipsets but 440EX, 440ZX, and 450NX chipsets also employed it ...
Revision 1.2 was the last version of the APM specification, released in 1996. ACPI is the successor to APM. Microsoft dropped support for APM in Windows Vista. The Linux kernel still mostly supports APM, though support for APM CPU idle was dropped in version 3.0.
For a miniature disc with a diameter of 8 cm (radius of 4 cm), the angular (rotation) speed ratio of outer to inner data edge is 1.6 if accessed at a constant linear velocity. This means that, for example, at a constant linar velocity of ×10, the equivalent angular velocity of the disc is ×24 while the being accessed at the inner data area ...
[1] For a miniature disc with a diameter of 8 cm (radius of 4 cm), the speed ratio of outer to inner data edge is 1.6. This means that, for example, if a disc is accessed at a constant angular velocity of ×24, the equivalent linear velocity is ×24 while accessed at the outermost edge of the data area while being ×10 at the innermost data area.
Customer lifetime value can also be defined as the monetary value of a customer relationship, based on the present value of the projected future cash flows from the customer relationship. [1] Customer lifetime value is an important concept in that it encourages firms to shift their focus from quarterly profits to the long-term health of their ...
AHCI is separate from the SATA 3 Gbit/s standard, although it exposes SATA's advanced capabilities (such as hot swapping and native command queuing) such that host systems can utilize them. For modern solid state drives, the interface has been superseded by NVMe. [2] The current version of the specification is 1.3.1.
This compound, 1-(3-chlorophenethyl)-3-cyclopentylpyrimidine-2,4,6-(1H,3H,5H)-trione was therefore put forward as a candidate for the future treatment of Parkinson's. [22] However, its selectivity and potency could not be confirmed in two independent studies from two other groups. [ 23 ]