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.
Sharing discs. If your Mac doesn't have a built-in optical drive and you need to use a CD or DVD, you can connect an external drive like the Apple USB SuperDrive. You can also share discs from the optical drive of another Mac, or from a Windows computer that has DVD or CD Sharing Setup installed.o share discs from a Mac that has a built-in or external optical drive, use these steps: 1  On the Mac that has an optical drive, choose System Preferences from the Apple menu. 2  Click the Sharing icon in the System Preferences window. 3  Make sure you've entered a name that you can easily recognize in the Computer Name field.