Old timers party at C. J. Arthur home. Front row, from left: Alex Matheson, Amy Jane Middleton Brown, Jane Lambeth, Sister Dover, Emily Tucker, Sister Matheson, Sister Palm, Mary Ann Parry, John Parry, Timothy Adams. Second row: Andrew Corry,...
Old Timers' Party, C. J. Arthur home. First row, from left: Alex Matheson Sr., Amy Jane Middleton Brown, Jane Lambeth, Sister Dover, Emily Tucker, Sister Matheson, Sister Palm, Mary Ann Parry, John Parry, Timothy Adams. Second row: Andrew Corry,...
Mr. Shay, in behalf of the Railroad Company asked that the sewer system he completed a s soon a s possible; the completion of the system being essential in connection with the Railroad Company Buildings. M r . Alma Esplin, Iron County Agent,...
Three Score and Ten in Retrospect medicine." It was 50 yards down the hill, so Dad started his arms swinging like a windmill at the top of the hill. By the time he got to the bottom, going about 50 mph at his own estimate, he hit the kid like a...
has been recovered, such as with DNA, so it is important to know what types of interferences are associated with each type of recovery procedure so that no damage will occur to the evidence at hand (Azoury et al., 2002 Stein et al., 1996; Zamir...
System Level: Examples:
Application Software Word Processing Software
Operating System Windows, MacOS
Hardware System (BIOS) Computers, Palm Devices
Table 3-1 Three Levels of Digital Devices
Digital devices operate on three levels: the hardware,...
Figure 3.4 System Memory Chips
As requests are made by the various parts of the system (e.g., the sound card),
the system interrupts its cycling pattern and performs the requested task. For that
reason, the locations where these interruptions occur...
Year Interface Type Developer(s) Explanation
Serial bus Various Original bus for computer systems
1974 Mouse, Network Xerox Developed mouse, network, GUI, windows
1986 Parallel bus Inmos UK First parallel port processing
1986 SCSI bus Various Small...
Serial buses send bits in sequence, one
right after another in “series” or, in other
words, in “serial” fashion (see Figure 3.5).
Serial buses were among the earliest types
used in computer systems. Many early
Most digital hardware systems require an operating system. Application
software talks to the operating system, which in turn talks to the hardware (see
Table 1-1). Most modern operating systems use graphical user interfaces or GUI
Both hardware and application software need an operating system to do their
work. There have been dramatic changes to operating systems, roughly
corresponding to the increased power of processors and the increasing RAM
demands of programs....