Day on Torts
T.C.A. Sec. 20-9-303 permits a lawyer “to use a blackboard, models or similar devices, also any picture, plat or exhibit introduced in evidence, in connection with his argument to the jury for the purpose of illustrating his contentions with respect to the issues which are to be decided by the jury….” The statute prohibits a lawyer from making an argument “in writing” that could not properly be made orally.
In this era, I think this statute gives counsel the right to use Powerpoint or a similar program during closing argument.