To synchronize agenda and email with the more elaborate versions of the same applications used on the PC early PDAs connected to the first by cable using the serial port which after some years was ousted by the USB (that was introduced in 1996).
To synchronize agenda and email with the more elaborate versions of the same applications used on the PC early PDAs connected to the first by cable using the serial port which after some years was ousted by the USB (that was introduced in 1996). Later versions often use Bluetooth and or WiFi as means to synchronize data. Wireless connectivity made it possible that mobile email and Internet access functionality were added to the PDA.