MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -Typical features. A typical PDA has a touchscreen for navigation, a memory card slot for data storage, and IrDA, Bluetooth and/or Wi-Fi. However, some PDAs may not have a touchscreen, using softkeys, a directional pad, and a numeric keypad or a thumb keyboard for input.

Detailed explanation-2: -PDA, in full personal digital assistant, an electronic handheld organizer used in the 1990s and 2000s to store contact information, manage calendars, communicate by e-mail, and handle documents and spreadsheets, usually in communication with the user’s personal computer (PC).