(a) Where there is no conflict in the evidence and the evidence introduced with all reasonable deductions and inferences therefrom shall demand a verdict of acquittal or "not guilty" as to the entire offense or to some particular count or offense, the court may direct the verdict of acquittal to which the defendant is entitled under the evidence and may allow the trial to proceed only as to the counts or offenses remaining, if any. (b) The defendant shall be entitled to move for a directed verdict