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2. Wireless security camera - Wikipedia

   en.wikipedia.org/wiki/Wireless_security_camera

   Wireless security cameras are closed-circuit television (CCTV) cameras that transmit a video and audio signal to a wireless receiver through a radio band. Many wireless security cameras require at least one cable or wire for power; "wireless" refers to the transmission of video/audio. However, some wireless security cameras are battery-powered ...

3. List of home computers - Wikipedia

   en.wikipedia.org/wiki/List_of_home_computers

   Homebuilt computer. List of home computers by video hardware classified by video interface. List of computers running CP/M contains a list of personal computers running CP/M. These were usually intended for small office use. List of Soviet computer systems includes many "home" systems as well as office and "big iron" systems.

4. Closed-circuit television - Wikipedia

   en.wikipedia.org/wiki/Closed-circuit_television

   [90] [91] [92] New York City's Domain Awareness System has 6,000 video surveillance cameras linked together, [93] there are over 4,000 cameras on the subway system (although nearly half of them do not work), [94] and two-thirds of large apartment and commercial buildings use video surveillance cameras.

5. Wi-Fi - Wikipedia

   en.wikipedia.org/wiki/Wi-Fi

   Antennas. Wi-Fi ( / ˈwaɪfaɪ /) [1] [a] is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves. These are the most widely used computer networks, used globally in ...

6. Home computer - Wikipedia

   en.wikipedia.org/wiki/Home_computer

   Home computer. The often sprawling nature of a well-outfitted home computer is evident with this Tandy Color Computer 3. Home computers were a class of microcomputers that entered the market in 1977 and became common during the 1980s. They were marketed to consumers as affordable and accessible computers that, for the first time, were intended ...

7. List of early microcomputers - Wikipedia

   en.wikipedia.org/wiki/List_of_early_microcomputers

   These microcomputers were often sold as "DIY" kits or pre-built machines in relatively small numbers in the mid-1970s. These systems were primarily used for teaching the use of microprocessors and supporting peripheral devices, and unlike home computers were rarely used with pre-written application software. Most early micros came without ...