See also Database, management systems.
Reduced instruction set computer, See RISC.
Redundant array of independent disks, See RAID.
Redundant bits, 77
See also Check bits and Parity.
in disk drives, 307308
Context switching, 360361
defined, 360, 367
See also Operating systems.
hardwired versus microprogrammed, 27, 179182
Control Data Corporation (CDC), 19, 22
CDC 6600 supercomputer, 24
CEN (Comite Europeen de Normalisation), 11
Central processing unit (CPU)
arithmetic logic unit (ALU) 146, 147
basics and organization, 145157
control unit, 146, 147
See also Control unit.
data path, 146
Answers and Hints for
1. Between hardware and software, one provides more speed, the other provides more
flexibility. (Which one is which?) Hardware and software are related through the
Principle of Equivalence of Hardware and
9. a) Class B
b) Class C
c) Class A
11. a) We will assume that no options are set in the TCP or IP headers and ignore any
session shutdown messages. There are 20 bytes in the TCP header and 20 bytes in
the IP header. For a file size of
7. False. One method of proof uses a truth table. A more challenging approach using
identities employs the relation:
a XOR b = ab + ab
(x + y)(x + y)(x + z)
= x(x + y)(x + z) + y(x + y)(x + z)
= x(x x + x z + x y + yz) + y(x x + x z + x y + yz)
Virtual Machine 1. A hypothetical computer. 2. A self-contained operating environment that gives the illusion of the existence of a separate physical machine. 3. A software emulation of a real machine.
Virtual Memory A method which uses the hard disk as a
QAM except that TCM adds a parity bit to each signal point, allowing for some forward error correction in the transmitted signal.
Trie An acyclic (n-ary tree) data structure that stores partial data key values in each of
its nodes. The key value is assemb
b) Signed-magnitude: 10101010
Ones complement: 11010101
Twos complement: 11010110
9. a) Largest Positive: 011111 (31) Smallest Negative: 100000 (31)
11. a) 111100
13. a) 1001
17. Hint: Begin the trace as follows:
J (Binary) K
TCM See Trellis Code Modulation.
TCO See Total Cost of Ownership.
TCP A connection-oriented protocol used by the Internet. TCP is a self-managing protocol that assures the accurate, sequenced delivery of data segments.
TDM See Time Division Multiplexing.
Switch A device that provides point-to-point interconnection between system components. In the context of data communications, a switch is a Layer 2 device that creates
a point-to-point connection between one of its input ports and one of its output ports
Running Head: FASHION BLOGGING
Fashion blogging has a great impact on the society and a range of benefits as well. Through
fashion blogging various groups profit which includes the bloggers themselv
I found it very easy to install Windows 7. I was having trouble with the password portion, but it was
because I had the caps lock on and needed to turn it off. There was a part where I had to put a number
in. I dont understand why and how we get that numb