290. Which one of the following is the definition of the term System?

~Base elements of information, such as numbers, letters, symbols and so on, which are processed or carried out by human or computer

~A way of data representation, or a scheme of data positioning

=A set of material or abstract objects, which are simultaneously considered as one whole (entire), and which have been united for achieving some certain results.

~A device or a complex of devices, which is intended for mechanization or automating of data processing, and which is constructed on the base of electronic elements

~A detailed instructions that control the operation of a computer system

291. Which one of the following is the definition of Transistor?

~Transistor is an independent I/O block, which is equipped with its own processor and own system of instructions. These instructions are stored in the main memory subsystem, but they are executed only by corresponding processor (of I/O block).

~Transistor is a device, which serves as a central commutator for data transfer among data channels, CPU and the main memory. It may be considered as a dispatcher (manager) of access to the main memory by CPU and data channels

=Transistor is an electronic device on the base of semiconductor crystal, which has got three or more electrodes; it intended for amplification, generation or transformation electric oscillations.

~Transistor is an electronic device made by printing thousands or even millions of tiny transistors and some other electronic elements on a small silicon crystal (chip), which are connected in a certain way and considered as entire one.

~None of the statements

292. Which one of the following was the first successful commercial computer?

~ENIAC

=UNIVAC I

~EDVAC

~IAS

~UNIVAC II

293. Which part of IAS performs the primary arithmetic and logical operations of the computer?

=Arithmetic & Logic Circuits Unit

~Memory Buffer Register

~Memory Address Register

~Instruction Register

~Accumulator

294. Which process divides the disk into sectors and tracks?

~Creation

~Initiation

=Formatting

~Modification

~Erasing

295. Which register is responsible for serving for temporary storage operands and results in ALU in IAS?

~Memory Buffer Register

~Memory Address Register

~Instruction Register

=Accumulator

~Program Counter

296. Which register is responsible for serving for temporary storage operands and results in ALU in IAS?

~Memory Buffer Register

~Memory Address Register

~Instruction Register

=Multiplier Quotient

~Program Counter

297. Which register is responsible for serving for the temporary storage of the right instruction, which has been fetched in IAS?

~Memory Buffer Register

~Memory Address Register

~Instruction Register

=Instruction Buffer Register

~Program Counter

298. Which register is responsible for storing a word, which should be put into the memory or which just have been taken out of the memory in IAS?

=Memory Buffer Register

~Memory Address Register

~Instruction Register

~Instruction Buffer Register

~Program Counter

299. Which register is responsible for storing address of the next word of instruction, which should be fetched next in IAS?

~Memory Buffer Register

~Memory Address Register

~Instruction Register

~Instruction Buffer Register

=Program Counter

300. Which register is responsible for storing an address of the memory cell to which we call for write or read data in IAS?

~Memory Buffer Register

=Memory Address Register

~Instruction Register

~Instruction Buffer Register

~Program Counter

301. Which register is responsible for storing an operation code of current instruction 8 bit width during process of its execution in IAS?

~Memory Buffer Register

~Memory Address Register

=Instruction Register

~Instruction Buffer Register

~Program Counter

302. Which register keeps track of the instructions in the program stored in memory?

~Control register

=Program counter

~Status register

~Direct register

~Memory buffer register

303. Which registers can interact with the secondary storage?

=Memory address register (MAR)

~Program counter (PC)

~Instruction register (IR)

~Control unit

~Central Processing Unit (CPU)

304. While using the direct mapping technique, in a 24 bit system the higher order 5 bits is used for ________.

~Word

=Tag

~Block

~Line

~Slot

305. While using the direct mapping technique, in a 24 bit system the lower order 2 bits is used for ________.

=Word

~Tag

~Block

~Line

~Slot

306. ______ bus arbitration appproach uses the involvement of the processor.

=Centralized

~Distributed

~Random

~Sequential

~Priority

307. ________________ is an area of internal (high-speed) memory for temporary storing data.

=Register

~Word

~Resistor

~Transistor

~Control Circuits

308. ________________ is an assemblage of quite certain number of symbols (binary digits, bits), which is perceived by the computer as entire(whole, integer, not dividable) one and has got a strict meaning (sense).

~Register

=Word

~Resistor

~Transistor

~Control Circuits

309. _________________ is a temporary cessation of the process caused by an event, which is an external one as regards to this process.

=interrupt

~instruction

~fetch

~execute

~operation