Fast intermediate memory between the work memory and the CPU.
(Compact Disc – Read Only Memory) Removable memory for large amounts of
Pressing and immediately releasing the left mouse button; this selects objects or
The COM1 port is a serial V.24/modem interface. This interface is suitable for
asynchronous data transmission. It can also be used to connect printers with a
The COM2 port is a serial V.24 interface which can be used to connect a mouse or
other external devices (for example, printers).
These are files which define the configuration after booting. Examples of such files
are CONFIG.SYS and AUTOEXEC.BAT and registry files.
The configuration software brings the device configuration up to date when
modules are installed. This is done either by copying the configuration files sup-
plied with the module or by manual configuration.
Pointer that shows the position on the screen at which the next entry will appear.
Keypad on the keyboard for controlling the cursor.
SIMATIC Box PC 620 Manual