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Sleep mode has gone by various names, including Stand By, Suspend and Suspend to RAM. Machine state is held in RAM and, when placed in sleep mode, the computer cuts power to unneeded subsystems and places the RAM into a minimum power state, just sufficient to retain its data. Because of the large power saving, most laptops automatically enter ...
In contrast to a system that uses caches, a system with scratchpads is a system with non-uniform memory access (NUMA) latencies, because the memory access latencies to the different scratchpads and the main memory vary. Another difference from a system that employs caches is that a scratchpad commonly does not contain a copy of data that is ...
The memory in the iBook G4 is covered by a removable AirPort card, and accessible by removing the RAM shield with a Phillips screwdriver. While some of the earlier models (e.g., 800 MHz and 933 MHz) have a specified 640 MB RAM limit, it is possible to have a total of 1.12 GB of RAM installed (128 MB built-in, plus a 1 GB SO-DIMM), or 1.25 or 1. ...
Apple M2 is a series of ARM-based system on a chip (SoC) designed by Apple Inc., launched 2022 to 2023.It is part of the Apple silicon series, as a central processing unit (CPU) and graphics processing unit (GPU) for its Mac desktops and notebooks, the iPad Pro and iPad Air tablets, and the Vision Pro mixed reality headset.
Following Apple's lead, other computer makers focused on "legacy-free" personal computers. [89] [90] The iMac's sales helped buoy Apple while it released a modern operating system and refreshed the rest of the Mac lineup. The computer's success positioned the company to focus on emerging digital media trends. [5]
It became the best-selling Mac in Apple's history. For five months in 2008, it was the best-selling laptop of any brand in US retail stores. [3] There have been three separate designs of the original MacBook. The original design used a combination of polycarbonate and fiberglass casing which was modeled after the iBook G4.
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If needed, contents of the computer memory can be transferred to storage; a common way of doing this is through a memory management technique called virtual memory. Modern computer memory is implemented as semiconductor memory, [5] [6] where data is stored within memory cells built from MOS transistors and other components on an integrated ...