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Area codes 214, 469, 972, and 945 are telephone area codes in the North American Numbering Plan (NANP) for Dallas, Texas and most of the eastern portion of the Dallas–Fort Worth metroplex The area codes are assigned in an overlay complex to a single numbering plan area that was the core of one of the original area codes of 1947, area code 214.
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
Affiliated Computer Services Inc. (ACS) was a company that provided information technology services as well as business process outsourcing solutions to businesses, government agencies, and non-profit organizations. ACS was based in Dallas, Texas. ACS was ranked at number 341 on the 2010 Fortune 500 list. [2]
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In the binary system, each bit represents an increasing power of 2, with the rightmost bit representing 2 0, the next representing 2 1, then 2 2, and so on. The value of a binary number is the sum of the powers of 2 represented by each "1" bit. For example, the binary number 100101 is converted to decimal form as follows:
Monitronics International was founded in Dallas in 1994 to provide alarm monitoring services to U.S. customers and businesses, as well as financing, technical training and product solutions [clarification needed] to dealers within the industry. [3] It was funded mostly by ABRY Partners until it was sold to Ascent Media in December 2010. [4]
CompuCom Systems Inc. is a technology managed services provider and product reseller headquartered in Fort Mill, South Carolina. It is a wholly owned subsidiary of Variant Equity Advisors .
Numbering plan areas and area codes of Texas (tan). This is a list of area codes in the U.S. state of Texas.. The date of establishment of each area code is indicated in parentheses: [1]