The phrase “PC load letter” is a printer error message on some mostly obsolete types of HP laserjet printers. Here, “PC” stands for “paper cassette” and the error indicates that no letter-sized paper is available for a print job with a letter size. The error message is instructing the user to load a letter-sized paper into the printer.
A high-energy radio frequency weapon (HERF) is a directed-energy weapon used to disrupt digital equipment, such as computers. HERF works by blasting high-intensity radio waves at electronics, disrupting their operation.
A HERF is slso known as a HERF gun.
A HERF blast is a highly concentrated blast of electromagnetic radiation that can completely erase a hard disk, crash the PC or even fuse the silicon barriers on the chips, rendering the computer useless. However, in most cases, a HERF gun does not permanently damage a computer.
The majority of electrical appliances are at risk of this type of attack, although most electronic equipment in airplanes and other military vehicles is resistant to it.
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