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The Toot-a-Loop Radio or Panasonic R-72 was a novelty radio made by Panasonic Japan in the early 1970s. This radio was designed to be wrapped around the wrist. It also came with stickers for customizing the unit. Reception was the AM broadcast band only - no FM (the FM version of this radio is called RF-72). The radio was shaped something like ...
Click of death is a term that had become common in the late 1990s referring to the clicking sound in disk storage systems that signals a disk drive has failed, often catastrophically. [1] The clicking sound itself arises from the unexpected movement of the disk's read/write actuator. At startup, and during use, the disk head must move correctly ...
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TI-99/2, [45] a 4K RAM, 32K ROM computer with no color, sound, or joystick port and a Mylar keyboard. TI designed the computer in four and a half months to sell for under $100 and compete with the Sinclair ZX81 and Timex Sinclair 1000. Based on the TMS9995 CPU running at 10.7 MHz and with a built-in RF modulator, performance greatly increased ...
The original TRS-80 Micro Computer System (later known as the Model I to distinguish it from successors) was launched in 1977 and- alongside the Apple II and Commodore PET- was one of the earliest mass-produced personal computers. [1] The line won popularity with hobbyists, home users, and small-businesses.
The radio and television tuner was also developed in the early 20th century, allowing people to receive and tune in to broadcast signals. The speaker and headphones were invented in the late 1800s and early 1900s and were used for listening to audio signals from radios, phonographs, and, later, electronic devices.
The internals of the TRS-80 Model 100. The left half is the back. Processor: 8-bit Oki 80C85, CMOS, 2.4576 MHz; Memory: 32 KB ROM; 8, 16, 24, or 32 KB static RAM.Machines with less than 32 KB can be expanded in 8 KB increments of plug-in static RAM modules.
The radio receiver Yaesu FRG-7000 uses the "Wadley loop". [1] XCR-30. The "Wadley-drift-canceling-loop", also known as a "Wadley loop", is a system of two oscillators, a frequency synthesizer, and two frequency mixers in the radio-frequency signal path.