TOM Computer Simulator TOM allows interactive programming that includes branching, looping, subroutine calls with stack operations, input and output operations, interrupt processing and memory mapped output. Any TOM program ... Cost: $39 Buy full version       Trial version       Publisher: Keylink Computers Limited     Descriptions TOM Computer Simulator: TOM allows interactive programming that includes branching, looping, subroutine calls with stack operations, input and output operations, interrupt processing and memory mapped output. Any TOM program can be seen executing on the main screen or by TOM's underlying machine. A collection of interactive screens show how the elements of TOM are built from logic gates. TOMs comprehensive multimedia presentation gives background information on: Number systems. ASCII collating sequence, Binary encoded decimal. Logic gates. Stacks and subroutines. Numeric overflow.