The _____ of the computer changed the way people lived.        

• invention

• hardware

• frequency

• electronics

These chips are used in _____ and telecommunications equipment every day.

• invention

• electronics

• hardware

• appliances

I went to a ____ store to buy computer tools.      

• technology

• frequency

• hardware

• appliances

This electronic ______ is so essential to have at home.

• frequency

• technology

• hardware

• appliance

Advances in ______ have improved education by over 30%.

• frequency

• electronics

• technology

• invention

Dolphins produce a high _______ sound.

• technology

• hardware

• invention

• frequency