We all know that programming language
is the system of syntax, grammar, and symbols or words used to give instructions
to a computer. Because computers work with binary numbers, first-generation
languages, called machine languages, required the writing of long strings of
binary numbers to represent such operations as add, subtract, and compare. Later
improvements allowed octal, decimal, or hexadecimal representation of binary
strings. It is difficult to write error-free programs in machine language; many
languages have been created to make programming easier and faster. Symbolic, or
assembly, languages-- second-generation languages-- were introduced in the early
1950s. They use simple mnemonics such as "A" for add or "M" for multiply, which
are translated into machine language by a computer program called an a A. it is used in designing software. B. it is hardware-independent. C. is should be translated into the computer language by software. D. it is designed to solve some specific problem. [单项选择]{{B}}TEXT B{{/B}}
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