CIT-118 Ch. 1 Part 1

In batch systems each job consisted of stacks of chips entered into a system.

OSs w/ networking capability have a 5th manager ("Network Manager") that enables authorized users to share resources.

The contents of RAM chips are nonvolatile.

The File Manager determines if user requests need files gotten from storage or if said files are already in memory.

The CPU is the brains of the computer with the circuitry to control the interpretation and execution of instructions.

In the 1980s, as a result of multiprocessing techniques, it became possible to execute two programs in parallel.

The Device Manager is what connects w/ every system device & chooses the most efficient way to allocate them.

There are two primary types of user interfaces: the graphical user interface and the command line interface.

In the 2010s, chips w/ millions of tightly packed transistors helped increase system performance dramatically.

Networking was not always an integral part of operating systems.

The Memory Manager, Interface Manager, User Manager, & File Manager are the four essential managers of every major OS.

With distributed operating systems, users need to be aware of which processor is actually running their applications.

1950s buffers mitigated speed diffs between IO & CPU similarly to how Web browsers make video & audio playback smoother.

The operating system manages each and every piece of hardware and software.

The ??? is very diff between operating systems, sometimes even between diff versions of the same operating system.

In active multiprogramming schemes, a job can monopolize the CPU for a long time while all other jobs waited.

An important function of the Processor Manager is to keep track of the status of each job, process, and thread.

General-purpose operating systems such as Linux or Windows are used in embedded systems.

The first bug was a moth trapped in a Harvard computer.

Onboard systems are computers that are physically placed inside products they operate to add features & capabilities.

Main memory is widely known as ROM.