E-mail. Discuss (0). Chametz is leaven -- any food that's made of grain and water that have been allowed to ferment and rise.. Bread, cereal, cake, cookies, pizza, pasta, and beer are blatant examples of chametz; but any food that contains grain or grain derivatives can be, and often is, chametz.Practically speaking, any processed food that is not certified  Kosher for Passover  may potentially include chametz ingredients.Chametz is the antithesis of matzah, the unleavened bread we eat on Passover to recall the haste in which we left Egypt, and the humble faith by which we merited redemption.ractically speaking, any processed food that is not certified  Kosher for Passover  may potentially include chametz ingredients. Chametz is the antithesis of matzah, the unleavened bread we eat on Passover to recall the haste in which we left Egypt, and the humble faith by which we merited redemption.
There are many functions that all operating systems share. All four  of the major ones have to do with management, but more  specifically, the management of memory, files, dâ¦evices, and  processors.
Classification of Operating systems. Operating systems provide a software platform on top of which other programs, called application programs, can run. The application programs must be written to run on top of a particular operating system. Your choice of operating system, therefore, determines to a great extent the applications you can run. For PCs, the most popular operating systems are DOS, OS/2, and Windows, but others are available, such as Linux. Recommended Reading: The History of Windows Operating Systems (Windows OS) from 1985 to present day.