Bitblt Bit bullet
Bit block transfer

Betweenmain memory and graphic memory, copy the bit map image which is used inpictureindication. In addition,OSand the graphiccard etc. prepare, it is that kind offunctionand API.

When is simultaneously logical operation processing such as enlargement reductionof image, AND operation and OR operation of image of other things possiblewiththe copyof image, there is a bitblt function which OS and the like prepares.

At the time ofgraphic processing of the computer, as for bit blt at one of important processing,there is manya thing which prepares the private hardware in order to execute bitblt inhigh speedin the graphic accelerator. Because of this, bitblt is used as one of indices of graphic processing efficiency.