1. The microwave. iIt has made it easier and faster to prepare many foods. But, really good cooks rarely use them. On TV, the chefs seem to be cooking nearly everything over wild , hot flames.
2.The computer has lead to the development of the internet, which is probably one of the greatest inventions of the 20th century.
3.The conversion to digital TV has resulted in the development of many new programs such as free movies. In Boston, we now have two free movie channels, one channel devoted to comedy and two others devoted to very popular shows of the 1940s upwards.
4. A cell-phone is useful,and I love it for emergencies. However, I still have a landline phone, which I use for many calls and for using my computer on the internet.