| 摘要 |
PROBLEM TO BE SOLVED: To quickly perform the plotting processing in the case that a plurality of control means which indicate graphics plotting are simultaneously operated. SOLUTION: A display control means is provided with a memory which store a plurality of plotting commands, and executes graphics plotting in accordance with these plotting commands successively read out from this memory and is further provided with an update storage means 33 which has stored contents updated in accordance with the quantity of plotting commands written in the memory by control means 34 and 35, and a single or plurality of control means 34 and 35 which have a function which refers to at least the contents of the update storage means 33 to acquire the address information of the memory to be next written in and writes plotting commands from this address of the memory. |
