When these processors all reside on a single chip, the term multicore computer is used, and each processing unit (consisting of a control unit, ALU, registers, and perhaps cache) is called a core
Anonymous Quiz
96%
T
4%
F
A prominent feature of contemporary computers is the use of multiple layers of memory, called….. , between the processor and main memory
Anonymous Quiz
12%
Register
84%
Cache memory
4%
RAM
1%
ROM
cache memory is smaller and faster than main memory and is used to speed up memory access
Anonymous Quiz
97%
T
3%
F
by placing in the cache data from main memory, that is likely to be used in the near future
Anonymous Quiz
87%
T
13%
F
A greater performance improvement may be obtained by using multiple levels of cache
Anonymous Quiz
92%
T
8%
F
, level n is …. and …..than level n + 1
Anonymous Quiz
7%
smaller – slower
9%
bigger – faster
79%
smaller – faster
5%
bigger – slower
in 1946, von Neumann and his colleagues began the design of a new stored program computer, referred to as the IAS computer, at the Princeton Institute for Advanced Studies. The IAS computer, although not completed until 1952, is the prototype of all subsequent general-purpose computers
Anonymous Quiz
94%
T
6%
F
The memory of the IAS consists of …. storage locations, called words, of … binary digits (bits) each Both data and instructions are stored the
Anonymous Quiz
11%
2,048 – 20
64%
4,096 – 40
15%
2,048 – 40
10%
4,096 – 20
Word formats. Each number is represented by a … sign bit and a … bit value
Anonymous Quiz
9%
20 – 20
65%
1 – 39
19%
39 – 1
7%
40 – 40
A word may alternatively contain …. bit instructions
Anonymous Quiz
60%
20 – 20
21%
1 – 39
10%
39 – 1
9%
40 – 40
Each instruction consisting of …. bit operation code (opcode) and a …. bit address designating one of the words in memory
Anonymous Quiz
13%
12 – 8
81%
8 – 12
3%
10 – 10
3%
20 – 20
Contains the address of the next instruction pair to be fetched from memory
Anonymous Quiz
9%
Memory buffer register (MBR)
26%
Memory address register (MAR)
7%
Instruction register (IR)
4%
Instruction buffer register (IBR)
52%
Program counter (PC)
2%
Accumulator (AC) and multiplier quotient (MQ)
Employed to hold temporarily the righthand instruction from a word in memory
Anonymous Quiz
16%
Memory buffer register (MBR)
6%
Memory address register (MAR)
12%
Instruction register (IR)
57%
Instruction buffer register (IBR)
4%
Program counter (PC)
6%
Accumulator (AC) and multiplier quotient (MQ)
Contains the 8-bit opcode instruction being executed
Anonymous Quiz
6%
Memory buffer register (MBR)
5%
Memory address register (MAR)
77%
Instruction register (IR)
4%
Instruction buffer register (IBR)
4%
Program counter (PC)
4%
Accumulator (AC) and multiplier quotient (MQ)
Employed to hold temporarily operands and results of ALU operations
Anonymous Quiz
12%
Memory buffer register (MBR)
6%
Memory address register (MAR)
6%
Instruction register (IR)
7%
Instruction buffer register (IBR)
1%
Program counter (PC)
68%
Accumulator (AC) and multiplier quotient (MQ)
Specifies the address in memory of the word to be written from or read into the MBR
Anonymous Quiz
8%
Memory buffer register (MBR)
87%
Memory address register (MAR)
1%
Instruction register (IR)
1%
Instruction buffer register (IBR)
0%
Program counter (PC)
2%
Accumulator (AC) and multiplier quotient (MQ)
Contains a word to be stored in memory or sent to the I/O unit, or is used to receive a word from memory or from the I/O unit
Anonymous Quiz
86%
Memory buffer register (MBR)
3%
Memory address register (MAR)
2%
Instruction register (IR)
4%
Instruction buffer register (IBR)
1%
Program counter (PC)
3%
Accumulator (AC) and multiplier quotient (MQ)
The transistor, which is smaller, cheaper, and generates less heat than a vacuum tube, can be used in the same way as a vacuum tube to construct computers
Anonymous Quiz
87%
T
13%
F