Подчеркните participle i и participle ii и установите функции каждого из них, т.е. укажите является ли оно определением, обстоятельством или частью глагола-сказуемого. 1) logical operations performed by a computer are comparing, selecting, sorting, and determining. 2) the input unit consists of some devices using different means. 3) discussing the advantages of the new memory unit the professor gave the students all the necessary explanations. 4) having punched holes in a card the operator put it into the computer.

1) Logical operations performed (причастие II – Participle II, определение) by a computer are comparing, selecting, sorting, and determining.
2) The input unit consists of some devices using (причастие I – Participle I Simple, определение) different means.
3) Discussing (причастие I – Participle I Simple, обстоятельство) the advantages of the new memory unit the professor gave the students all the necessary explanations.
4) Having punched (причастие I перфектное – Participle I Perfect, обстоятельство) holes in a card the operator put it into the computer.