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The 74181 is a 7400 series medium-scale integration (MSI) TTL integrated circuit, containing the equivalent of 75 logic gates [3] and most commonly packaged as a 24-pin DIP. The 4-bit wide ALU can perform all the traditional add / subtract / decrement operations with or without carry, as well as AND / NAND, OR / NOR, XOR , and shift .
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Facebook enables users to control access to individual posts and their profile [122] through privacy settings. [123] The user's name and profile picture (if applicable) are public. Facebook's revenue depends on targeted advertising, which involves analyzing user data to decide which ads to show each user.
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The Xerox Alto is a computer system developed at Xerox PARC (Palo Alto Research Center) in the 1970s. It is considered one of the first workstations or personal computers, and its development pioneered many aspects of modern computing.
Facebook Live was used by the perpetrators of an incident in which four black young adults kidnapped and tortured a mentally disabled white male. [121] All four were charged and convicted of hate crimes. [122] Facebook Live was also used by Brenton Tarrant, perpetrator of the Christchurch mosque shootings to broadcast the attack on Al Noor Mosque.
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