Ex. 2. use the correct tense form.

1.they (to write) this computer program by june.
2.a hybrid computer (to combine) some properties of digital and analog computers.
3.computers (to become) smaller, cheaper and more numerous.
4.when i came into the room, my friend (to compile) a program.
5.the computer of the future (to use) natural languages.
6.this software (to contain) information about memory capacity.
7.mr. smith (to buy) a new modem now.
8.the developer (to check) the equipment while the designer (to teach) the employees how to deal with scanners and printers.
9.they just (to install) the program.
10.before mr. brown (to leave) for london last friday, his secretary (to phone) the hotel to reserve an accommodation for him.

ex. 3. reply to the following sentences with a suitable question.

1. all computers have three basic capabilities.
2. the fundamental job of a computer is processing information.
3. the memory is used for storing information.
4. charles babbage can be called the father of computers.
5.some of the most common methods of data input are to use punched cards, magnetic tapes, discs and terminals.
6.punched cards were used before 1960.
7.computers are machines capable of processing and outputting data.
8.the computed results have been printed in tables.
9.yes, the name «computer» covers many different types of machines.
10. no, all computers are basically the same.