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[4] Just before jumping to the bootloader, some systems on a chip also remove the boot ROM from the memory mapping, while others do not, making it possible to dump the boot ROM from later analysis. [3] If the boot ROM is still visible, bootloaders can also call the code of the boot ROM (which is sometimes documented).
Access to the computer's internal components is gained by using a handle to pull the computer out of its plastic shell. The Cube was an important product to Apple, [6] and especially to Apple CEO Steve Jobs, who said the idea for the product came from his own desires as a computer user for something between the iMac and Power Mac G4, saying, "I wanted the [flat-panel] Cinema Display but I don ...
On July 12, 2018, Apple released an updated MacBook Pro that includes the T2 chip, which among other things enables the "Hey Siri" feature. [12] [13] On November 7, 2018, Apple released the updated Mac Mini and MacBook Air models with the T2 chip. [14] [15] On August 4, 2020, a refresh of the 5K iMac was announced, including the T2 chip. [16]
Boot loaders may face peculiar constraints, especially in size; for instance, on the IBM PC and compatibles, the boot code must fit in the Master Boot Record (MBR) and the Partition Boot Record (PBR), which in turn are limited to a single sector; on the IBM System/360, the size is limited by the IPL medium, e.g., card size, track size.
The Electronic Frontier Foundation stated that this change not only hurt battery life, but was also bad for security, describing the buttons as turning Wi-Fi and Bluetooth "off-ish" (greyed out, but not crossed out, as it would appear if switched off directly from the Settings app), as well as further criticizing the connections resuming at 5: ...
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The Power Mac G4 is a series of personal computers designed, manufactured, and sold by Apple Computer from 1999 to 2004 as part of the Power Macintosh line. Built around the PowerPC G4 series of microprocessors, the Power Mac G4 was marketed by Apple as the first "personal supercomputers", [1] reaching speeds of 4 to 20 gigaFLOPS.
The GMC-4 is a modernized version of Gakken's 1983 Gakken FX-System, also known as the R-165. This system was also sold by Radio Shack as the Science Fair Microcomputer Trainer, but replaced the FX's circuit board with hand-wired circuity assembled by the user using springs to hold short bits of wire. [2] The purpose of the GMC-4 is education.