Modern digital cell phones can process millions of calculations per second in order to compress and decompress the voice stream. The various parts of a cell phone. The circuit board is the heart of the system. The back of the circuit board. In the photos above, you see several computer chips.
Lets talk about what some of the individual chips do.
The microprocessor handles all of the housekeeping chores for the keyboard and display, deals with command and control signaling with the base station, and also coordinates the rest of the functions on the board. The ROM and flash memory chips provide storage for the phone' s operating system and customizable features, such as the phone directory. The RF and power section handles power management and recharging, and also deals with the hundreds of FM channels. The display and keypad contacts. The display has grown considerably in size as the number of features in cell phones have increased.