HP S20 - Manual (Page 42)

40 HP PhotoSmart S20 Photo Scanner Basics
taskbar
The Windows toolbar that docks on the edge of the desktop. The taskbar includes the Start
button, buttons for each open computer program, and a status area.
TWAIN
A standard protocol (method of communication) that programs can use to send instructions to
other programs or hardware, and receive data back from them (such as images). If you are
using a program that supports TWAIN, you can start the HP PhotoSmart scanning software
directly from that program.
USB connector
The connector (or port) on the USB interface installed in a PC to which the HP PhotoSmart
S20 photo scanner can be connected. The USB connector is on either the front or back exterior
of the PC.
USB interface
The Universal Serial Bus hardware and its associated software drivers. A USB interface
installed in a PC and connected to the HP PhotoSmart S20 photo scanner enables the photo
scanner to talk to the PC.