ISTANBUL AREL UNIVERSITY
: CEN208 & MTB204
: Computer Organization & Computer Architechture
Please make sure to write your name and student number on each paper that you have used Question Number
Note: Exam duration is 3 (three) hours only. No extra paper is allowed QUESTIONS
1. True or False? (20p)
A particular architecture may span many years and encompass a number of different computer models, its organization changing with changing technology.
System software was introduced in the third generation of computers. A common measure of performance for a processor is the rate at which instructions are executed, expressed as billions of instructions per seconds (BIPS).
Because all devices on a synchronous bus are tied to a fixed clock rate, the system cannot take advantage of advances in device performance.
A number of chips can be grouped together to form a memory bank A characteristic of ROM is that it is volatile.
It is not necessary for the ALU to signal when overflow occurs. Addition and subtraction can be performed on numbers in twos complement notation by treating them as unsigned integers.
It has become common practice to use a symbolic representation of machine instructions. Addresses are a form of data.
In a system without virtual memory, the effective address is a virtual address or a register. Register indirect addressing uses the same number of memory references as indirect addressing. The memory transfer rate has kept up with increases in processor speed. The control unit (CU) does the actual computation or processing of data. The processor needs to store instructions and data temporarily while an instruction is being executed.
It is possible to improve pipeline performance by automatically rearranging instructions within a program so that branch instructions occur later than actually desired. The execution of a program consists of the sequential execution of instructions. The execute cycle is simple and predictable.
It is important to design compact, time-efficient techniques for microinstruction branching. It is easier to design in hardware than in firmware.
Short answer? (20p)
a. The major structural components of the CPU are: control unit, register, CPU interconnection, and ______________________________________. arithmetic and logic unit (ALU) b. A _________________________ is a communication pathway connecting two or more devices. bus c. A _________________________ interrupt simply means that the processor can and will ignore that interrupt request signal. Disabled
d. A ____________________ RAM is made with cells that store data as charge on capacitors. Dynamic e. The simplest of the error-correcting codes is the _________________ code. Hamming f. The _________________________ is that part of the computer that actually performs arithmetic and logical operations on data. Arithmetic and Logic Unit (ALU)
g. ____________________ occurs when an arithmetic operation results in an absolute value greater than can be expressed with an exponent of 128. Overflow
h. The operation of the processor is determined by the instructions it executes, referred to as _________________ or computer instructions. machine instructions
i. ___________________ are bits in special registers that may be set by certain operations and used in conditional branch instructions. Status flags
j. Source and result operands can be in one of four areas: main or virtual memory, immediate, I/O device, and _________________________. processor register
k. The simplest form of addressing is ___________________ addressing. İmmediate l. Just as register addressing is analogous to direct...
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