is rotated about the axial shaft of a small e g 7 rpm dc motor 42 not shown the rate of rotation can be controlled by a simple reostatic speed control 43 connected between motor 42 and a battery 44 a recharger 45 is provided for battery 44 although a number of selections may be made for the individual components of the biff table i identifies the components found to be operable in the exemplary model table i______________________________________component no make______________________________________master microcomputer 111 intel 8748voice microprocessor 112 intel 8741inverters various fairchild 7404buffers various fairchild 7400lcd 39 s 121 hamlin 3922 315 5lcd drivers 126 intersil icm7211am1pli o expanders 151 152 intel 8243timer 213 fairchild 555driver 214 signetics 5503shift register 226 fairchild 74164voice synthesis module 225 general instruments vsm 2032telescopic sight 201 4x to 12xfocusing lens 20 29 mmdc motor 42 7 rpm 12 volt______________________________________ in operation an instructor selects a target 40 which is one of a plurality of miniature models which have been painted with retroreflective paint in patterns corresponding to the thermal emission of friendly or enemy vehicles as further explained by the application of albert h marshall u s ser no 433 580 dated oct 12 1982 the instructor places target 40 on model board 41 and darkens the training room if not previously darkened he then enters the identification of target 40 into master microcomputer 111 via switch 115 located on instructor station 10 and begins the training exercise by depressing start switch 113 also located at.