The modern mobile phone, in addition to implementing the basic functions of a conversation, usually equipped with many additional optionsuse the properties of the network (eg SMS, or to develop them, such as EMS, MMS, digital data transmission). They have based on additional software such as alarm clock, notepad, organizer, calculator. Mobile phone have additional built-in devices such as voice recorder, radio, MP3 player, GPS, a camera or a camera.
The advantages of the laptops that they can connect to wired or wireless internet anywhere, anytime. Laptops can be transported in contrast to a computer network.
In addition, most of notebooks are equipped with many modern technologies (IrDA, Bluetooth, Wi-Fi, USB ports, network card modem, CD / DVD, GPS
Another invention is a watchm. Clocks are used to measure and indicate the time.
They are used in * in astronomy (astronomical clocks and atomic clocks) * in general use everyday (domestic clocks, alarm clocks, timers, watches, clocks, tower clocks the railway station, etc.) * in sports (watches, clocks, chess, clocks gołębiarskie) * in navigation and shipping (chronometers, clocks watchkeeping) * samoczynnych in equipment (the system clocks of computers, programmers washing machines, etc.) * as switches and circuit breakers (lock time)