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31)71st Republic Day 2020 highlights| Beating retreat ceremony from Attari-Wagah border on Republic Day

India Republic Day -- India celebrates the 71st Republic Day today. On this day in 1950the Constitution of India came into force. The Republic Day paradewhich is considered as the main attraction of the days celebrationwas held along Rajpath. It was a 90-minute affair. Brazilian President Jair Bolsonaro was the chief guest with the parade. Before the parade startedPrime Minister Narendra Modi paid tribute at the Nationwide War Memorial and President Ram Nath Kovind unfurled the national flag in addition to General Manoj Mukund NaravaneChief of the Army TeamAdmiral Karambir SinghKey of the Naval StaffMarshal Rakesh Kumar Singh BhadauriaChief of the Air Team. 5 41 PM WIRD PM Narendra Modi gets to Rashtrapati Bhawan for At home reception hosted by President Ram Nath Kovind. 5 12 pm WIRD Beating retreat ceremony on Attari-Wagah border on Republic Day. 4 36 pm hours IST Air India Markets 30000 National Red flags To Passengers On Republic Day The national carrier Air India celebrat
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Home computer

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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 for the use of a single nontechnical user. These computers were a distinct market segment that typically cost much less than business, scientific or engineering-oriented computers of the time such as those running CP/M or the IBM PC, and were generally less powerful in terms of memory and expandability. However, a home computer often had better graphics and sound than contemporary business computers. Their most common uses were playing video games, but they were also regularly used for word processing, doing homework, and programming. Home computers were usually not electronic kits; home computers were sold already manufactured in stylish metal or plastic enclosures. There were, however, commercial kits like the Sinclair ZX80 which were both home and home-built co
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Background

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As early as 1965, some experimental projects, such as Jim Sutherland's ECHO IV, explored the possible utility of a computer in the home. In 1969, the Honeywell Kitchen Computer was marketed as a luxury gift item, and would have inaugurated the era of home computing, but none was sold. Computers became affordable for the general public in the 1970s due to the mass production of the microprocessor starting in 1971. Early microcomputers such as the Altair 8800 had front-mounted switches and diagnostic lights (nicknamed "blinkenlights") to control and indicate internal system status, and were often sold in kit form to hobbyists. These kits would contain an empty printed circuit board which the buyer would fill with the integrated circuits, other individual electronic components, wires and connectors, and then hand-solder all the connections. While two early home computers (Sinclair ZX80 and Acorn Atom) could be bought either in kit form or assembled, most home computers were
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Technology

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Many home computers were superficially similar. Most had a keyboard integrated into the same case as the motherboard, or, more frequently, a mainboard—while the expandable home computers appeared from the very start (the Apple II offered as many as seven expansion slots), as the whole segment was generally aimed downmarket, few offers were priced or positioned high enough to allow for such expandability. Some systems have only one expansion port, often realized in the form of cumbersome "sidecar" system, such as on the TI-99/4, or required finicky and unwieldy ribbon cables to connect the expansion modules. Sometimes they were equipped with a cheap membrane or chiclet keyboard in the early days, although full-travel keyboards quickly became universal due to overwhelming consumer preference. Most systems could use an RF modulator to display 20–40 column text output on a home television. Indeed, the use of a television set as a display almost defines the pre-PC home computer. A
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Radio frequency interference

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After the first wave of game consoles and computers landed in American homes, the United States Federal Communications Commission (FCC) began receiving complaints of electromagnetic interference to television reception. By 1979 the FCC demanded that home computer makers submit samples for radio frequency interference testing. It was found that "first generation" home computers emitted too much radio frequency noise for household use. The Atari 400 and 800 were designed with heavy RF shielding to meet the new requirements. Between 1980 and 1982 regulations governing RF emittance from home computers were phased in. Some companies appealed to the FCC to waive the requirements for home computers, while others (with compliant designs) objected to the waiver. Eventually techniques to suppress interference became standardized.
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Use in the 21st century

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Retrocomputing is the use of vintage hardware, possibly performing modern tasks such as surfing the web and email. As programming techniques evolved and these systems were well-understood after decades of use, it became possible to write software giving home computers capabilities undreamed of by their designers. The Contiki OS implements a GUI and TCP/IP stack on the Apple II, Commodore 8-bit and Atari ST (16-bit) platforms, allowing these home computers to function as both internet clients and servers. The Commodore 64 has been repackaged as the C-One and C64 Direct-to-TV, both designed by Jeri Ellsworth with modern enhancements. Throughout the 1990s and 1st decade of the 21st century, many home computer systems were available inexpensively at garage sales and on eBay. Many enthusiasts started to collect home computers, with older and rarer systems being much sought after. Sometimes the collections turned into a virtual museum presented on web sites. As their often-inexpensively manu
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Notable home computers

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The time line below describes many of the most popular or significant home computers of the late 1970s and of the 1980s. The most popular home computers in the USA up to 1985 were: the TRS-80 (1977), various models of the Apple II family (first introduced in 1977), the Atari 400/800 (1979) along with its follow up models the 800XL and 130XE, and the Commodore VIC-20 (1980) and the Commodore 64 (1982). The VIC was the first computer of any type to sell over one million units, and the 64 is still the highest-selling single model of personal computer ever, with over 17 million produced before production stopped in 1994 – a 12-year run with only minor changes. At one point in 1983 Commodore was selling as many 64s as the rest of the industry's computers combined. The British market was different, as relatively high prices and lower disposable incomes reduced the appeal of most American products. New Scientist stated in 1977 that "the price of an American kit in dollars rapidly tr
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