List of available Encyclopedias in NB Productions Your guide on the Web since 2000: ·  computer
computer device capable of performing a series of arithmetic or logical operations. A computer is distinguished from a calculating machine, such as an electronic calculator , by being able to store a computer program (so that it can repeat its operations and make logical decisions), by the number and complexity of the operations it can perform, and by its ability to process, store, and retrieve data without human intervention. Computers developed along two separate engineering paths, producing two distinct types of computer—analog and digital. An analog computer operates on continuously varying data; a digital computer performs operations on discrete data.
Computers are categorized by both size and the number of people who can use them concurrently. Supercomputers are sophisticated machines designed to perform complex calculations at maximum speed; they are used to mode
· Medicare
Medicare national health insurance program in the United States for persons aged 65 and over and the disabled. It was established in 1965 with passage of the Social Security Amendments and is now run by the Centers for Medicare and Medicaid Services. Coverage for the disabled began in 1973. Medicare provides for a basic program of hospital insurance, under which enrollees are protected against major costs of hospital and related care; and a supplementary medical insurance program, through which persons are aided in paying doctor bills and other health-care bills. It is funded by a tax on the earnings of employees that is matched by the employer and by premiums paid by enrollees. In 2002 nearly 40.5 million Americans were enrolled in Medicare. Legislation passed in 2003 provides for a drug benefit program (beginning in 2006), higher premiums for enrollees earning more than $80,000, and subsidies over 10 years to encourage private insurers to compete with Medicare.
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Medicare national health insurance program in the United States for persons aged 65 and over and the disabled. It was established in 1965 with passage of the Social Security Amendments and is now run by the Centers for Medicare and Medicaid Services. Coverage for the disabled began in 1973. Medicare provides for a basic program of hospital insurance, under which enrollees are protected against major costs of hospital and related care; and a supplementary medical insurance program, through which persons are aided in paying doctor bills and other health-care bills. It is funded by a tax on the earnings of employees that is matched by the employer and by premiums paid by enrollees. In 2002 nearly 40.5 million Americans were enrolled in Medicare. Legislation passed in 2003 provides for a drug benefit program (beginning in 2006), higher premiums for enrollees earning more than $80,000, and subsidies over 10 years to encourage private insurers to compete with Medicare.
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