● A __(51)__-purpose digital computer is capable of __(52)__ variousmicro-operations and, __( 53 )__, can be instructed as to what specific sequence of operations it must perform. The user of such a system can control the process by means of a program, that is, a set of instructions __(54)__ specify the operations, operands and the processing __( 55 )__.
(51): A. general B. multiple C. single D. specific
(52): A. execute B. executed C. executes D. executing
(53): A. in absent B. in addition C. in front D. in order
(54): A. that B. this C. what D. where
(55): A. object B. space C. sequence D. time
● Fortunately, however, computer designers have __(56)__ a method for detecting such errors by adding an __(57)__ check bit or __(58)__ bit to each character in storage. The designers of a particular computer model may then use the check bit to make sure that every valid character code will always have an even number of "1" bit, it is called even __( 58 )__. And some other computers may __(59)__ the __(60)__ __(58)__ .
(56): A. develop B. developed C. developing D. develops
