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Citizens Band Radio
Citizens band radio (also known as CB radio), used in many countries, is a land mobile radio system, a system allowing short-distance person-to-person bidirectional voice communication between individuals, using two way radios operating on 40 channels near 27 MHz (11 m) in the high frequency (a.k.a. shortwave) band. Citizens band is distinct from other personal radio service allocations such as FRS, GMRS, MURS, UHF CB and the Amateur Radio Service ("ham" radio). In many countries, CB operation does not require a license, and (unlike amateur radio) it may be used for business or personal communications. Like many other land mobile radio services, multiple radios in a local area share a single frequency channel, but only one can transmit at a time
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TRS-80
The TRS-80 Micro Computer System (TRS-80, later renamed the Model I to distinguish it from successors) is a desktop microcomputer launched in 1977 and sold by Tandy Corporation through their RadioShack stores. The name is an abbreviation of Tandy/RadioShack, Z80 microprocessor.[3] It is one of the earliest mass-produced and mass-marketed retail home computers.[4] The TRS-80 has a full-stroke QWERTY keyboard, the Zilog Z80 processor (rather than the more common Intel 8080), 4 KB DRAM standard memory (when many 8-bit computers shipped with only 1 KB RAM), small size and desk footprint, floating-point Level I BASIC language interpreter in ROM, 64-character per line video monitor, and a starting price of US$600[1] (equivalent to US$2500 in 2019)
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Personal Computer
A personal computer (PC) is a multi-purpose computer whose size, capabilities, and price make it feasible for individual use.[1] Personal computers are intended to be operated directly by an end user, rather than by a computer expert or technician. Unlike large, costly minicomputers and mainframes, time-sharing by many people at the same time is not used with personal computers. Institutional or corporate computer owners in the 1960s had to write their own programs to do any useful work with the machines. While personal computer users may develop their own applications, usually these systems run commercial software, free-of-charge software ("freeware"), which is most often proprietary, or free and open-source software, which is provided in "ready-to-run", or binary, form
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Commodore 64
The Commodore 64, also known as the C64 or the CBM 64, is an 8-bit home computer introduced in January 1982 by Commodore International (first shown at the Consumer Electronics Show, in Las Vegas, January 7–10, 1982).[4] It has been listed in the Guinness World Records as the highest-selling single computer model of all time,[5] with independent estimates placing the number sold between 12.5 and 17 million units.[2] Volume production started in early 1982, marketing in August for US$595 (equivalent to $1,576 in 2019).[6][7] Preceded by the Commodore VIC-20 and Commodore PET, the C64 took its name from its 64 kilobytes (65,536 bytes) of RAM
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Heathkit
Heathkit is the brand name of kits and other electronic products produced and marketed by the Heath Company. The products over the decades have included electronic test equipment, high fidelity home audio equipment, television receivers, amateur radio equipment, robots, electronic ignition conversion modules for early model cars with point style ignitions, and the influential Heath H-8, H-89, and H-11 hobbyist computers, which were sold in kit form for assembly by the purchaser. Heathkit manufactured electronic kits from 1947 until 1992. After closing that business, the Heath Company continued with its products for education, and motion-sensor lighting controls. The lighting control business was sold around 2000. The company announced in 2011 that they were reentering the kit business after a 20-year hiatus but then filed for bankruptcy in 2012,[1] and under new ownership began restructuring in 2013
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Dick Smith Wizzard
The Video Technology CreatiVision is a hybrid computer and home video game console introduced by VTech in 1981 and released in 1982. The hybrid unit was similar in concept to computers such as the APF Imagination Machine, the older VideoBrain Family Computer, and to a lesser extent the Intellivision game console and Coleco Adam computer, all of which anticipated the trend of video game consoles becoming more like low-end computers. The CreatiVision console sported an 8-bit Rockwell 6502 CPU at a speed of 2 MHz, 1KB of RAM aThe CreatiVision console sported an 8-bit Rockwell 6502 CPU at a speed of 2 MHz, 1KB of RAM and 16KB of Video RAM, and had a graphics resolution of 256 × 192 with 16 colors and 32 sprites. The console had two integrated joystick/membrane keypad controllers (much like the ColecoVision and Atari 5200) which, when set in a special compartment on top of the console, could be used as a computer keyboard
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Cordless Phone
A cordless telephone or portable telephone is a telephone in which the handset is portable but able to be used like landline phone communication, only it operates by radio frequency transmission and not a physical insulated wire, or telephone line. The base station is connected to the telephone network through a telephone line as a corded telephone is, and also serves as a charger to charge the handset's batteries. The range is limited, usually to the same building or some short distance from the base station. A cordless telephone differs from a mobile telephone by the limited range and by the base station on the subscriber premises. Current cordless telephone standards, such as PHS and DECT, have blurred the once clear-cut line between cordless and mobile telephones by implementing cell handoff (handover); various advanced features, such as data-transfer; and even, on a limited scale, international roaming
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