Weapons system and stabilization system on M1 Abrams Main Battle Tank

Some of the 'Weapons' section at http://www.inetres.com/gp/military/cv/tank/M1.html below:

WEAPONS

The Hughes infrared Thermal Imaging System (TIS) senses a small difference in heat radiated by objects. This is converted to electrical signals which are displayed on a cathode ray tube, similar to a TV picture. This image also is projected into the gunner's eyepiece. His sight displays target range information, ready-to-fire, and other systems indications. It also indicates if the laser rangefinder has received more than one return. The fire control computer has data entry and test panels for fault diagnosis.

A stabilization system permits accurate firing on the move. The gunner merely places his graticule on the target, and uses the laser rangefinder to determine the range. Then a computer applies necessary angles, and the gunner opens fire. The computer also gets information from a wind sensor and a pendulum static cant sensor on the turret roof. The main gun has a muzzle reference system to measure the bend of the gun. The gunner manually sets battle sight range, ammunition type, barrel wear, muzzle reference compensation, barometric pressure, and ammunition temperature.