The first generation of microcomputers available was based on ____ bit microprocessors.
Answer: B
Correct answer: 8
The first microcomputers were built on 8-bit processors - the Intel 8080, the Motorola 6800, the MOS 6502 and the Zilog Z80. Eight bits is one byte, so a register held \( 2^8 = 256 \) distinct values, and the 16-bit address bus reached 64 KB of memory.
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The complete picture of data stored in database is known as
Answer: B
Correct answer: Schema
The schema is the complete description of the database’s structure - every table, the columns and data types within it, the keys and the constraints. It is defined once and stored in the data dictionary; the records are the data that then fills that structure.
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The microcomputer, Intel MCS-80 is based on the widely used Intel
Answer: A
Correct answer: 8080 microprocessor
The Intel MCS-80 was the family of chips built around the 8080 microprocessor, introduced in 1974 - an 8-bit processor with a 16-bit address bus reaching 64 KB of memory. The 8085 and the 16-bit 8086 belong to the later MCS-85 and iAPX 86 families.
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Find the odd man out.
Answer: C
Correct answer: Java
Google, AltaVista and Lycos are web search engines. Java is a programming language, so it does not belong with them.
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The Storage-to-Storage instructions
Answer: A
Correct answer: have both their operands in the main store.
Storage-to-storage instructions take both operands from main memory and return the result there, without loading either into a register first - the form used for moving and comparing character strings. Register-to-storage and register-to-register instructions are the other two families.
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How many bit code is used by Murray code for TELEPRINTER machines.
Answer: B
Correct answer: 5
The Murray code, the teleprinter code standardised as ITA2, uses 5 bits per character. That gives \( 2^5 = 32 \) patterns - too few for letters, digits and punctuation together, so two of the patterns shift the machine between a letter case and a figure case, doubling the effective set.
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A modern digital computer has
Answer: D
Correct answer: All of the above
A modern digital computer is fast, holds a great deal of data, and computes to whatever precision is asked of it - extra digits cost only extra words of storage and time. All three statements therefore hold, which is why the combined option is correct.
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A program that is employed in the development, repair or enhancement of other programs is known as
Answer: B
Correct answer: Software tool
A program used to build, repair or improve other programs - a compiler, an editor, a debugger, a linker, a version control system - is a software tool. What sets the class apart is its subject: other software, rather than the user’s own data.
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LAN card is also known as ?
Answer: D
Correct answer: NIC
A LAN card is a network interface card: the adapter that gives a machine its physical connection to the network and its own MAC address. A modem converts between digital and analogue signals, while hubs and switches are separate devices that the cards connect to.
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Which are the two major types of computer chips?
Answer: D
Correct answer: Both b and c
The two chips that define a computer are the microprocessor, which executes the instructions, and the primary memory chip, which holds the instructions and data it works on. External storage is built from disks and other media rather than from a chip of this kind.
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