Synchronous programming language. A synchronous programming language is a computer programming language optimized for programming reactive systems. Computer systems can be sorted in three main classes: transformational systems that take some inputs, process them, deliver their outputs, and terminate their execution; a typical example is a compiler; interactive systems that interact continuously with their environment, at their own speed; a typical example is the web; and reactive systems that interact continuously with their env
Open Disk Utility (Applications > Utilities). Select the DVD disc from the list on the left. You will notice that there are two DVD icons--select the one slightly indented (this is the DVD itself, whereas the first one is the drive). Click on New Image in the Disk Utility main window. Choose a name and a destination from the Save As... window. Keep in mind that your destination should have enough space to copy the entire DVD, which can be over four gigs.
You canât burn a disc using a remote optical drive. To duplicate a CD or DVD: 1  Insert the CD or DVD disc in the optical drive, and select it in the list at the left. 2  Choose File > New > âDisk Image from [disc name].â. 3  Type a name for the disk image.  Choose âcompressedâ or âread-onlyâ from the Image Format pop-up menu. Choose âcompressedâ to create a smaller disk image.