Based on Section A, Part 2, Unit 1, fill in each of the blanks with one of the words given below.(详见Section A, Part 2, Unit 1课后练习第1题) A digital computer is generally made up of five distinct elements: a central processing unit, 1____ devices, memory storage devices, 2_____ devices and a bus. According to the text, modern digital computers can be divided into four major categories on the basis of cost and performance. They are microcomputers, 3_________ , minicomputers, and 4________. A program is a sequence of 5_______ that can be executed by a computer. It can either be built into the hardware or exist independently in the form of 6________. The smallest unit of information handled by a computer is bit, which is the abbreviation of binary 7_____. A group of 8_____ bits makes up a(n) 9_____, which is short for binary term. One of the trends in computer development is 10_____________, the effort to compress more circuit elements into smaller and smaller chip space. workstations software mainframes input output instructions eight microminiaturization digit byte