Tag: meaning and elements of computer system

1,00,00,00,000 operations per second can perform by a modern fast mainframe digital computer.

Under ideal circumstances, a high-end desktop x86 processor can execute over 100 billion instructions per second. In real world usage scenarios, however, the CPU is often stuck waiting for other components to answer back, mostly RAM and disk.

Clock Speeds are usually determined in MHz, 1 MHz representing 1 million cycles per second, or in GHz, 1 GHz representing 1 thousand million cycles per second. The higher the CPU speed, the better a computer will perform, in a general sense.

In digital computer, all the expressions are coded into Binary digits.

Binary in Digital Computers and Electronic Devices. Numbers can be encoded in binary format and stored using switches. ... In a computer, switches are implemented using transistors. The smallest memory configuration is the bit, which can be implemented with one switch.

Binary is a mathematical number system: a way of counting. We have all learned to count using ten digits: 0-9. One probable reason is that we have ten fingers to represent numbers. The computer has switches to represent data and switches have only two states: ON and OFF.

Then binary numbers are commonly used in digital and computer circuits and are represented by either a logic “0” or a logic “1”. Binary numbering systems are best suited to the digital signal coding of binary, as it uses only two digits, one and zero, to form different figures.

In analog computer Input is never converted to digital form.

An analog computer or analogue computer is a type of computer that uses the continuously changeable aspects of physical phenomena such as electrical, mechanical, or hydraulic quantities to model the problem being solved. ... Analog computers can have a very wide range of complexity.

An analog computers, works by measuring voltages and currents rather than by the process of counting. An analog computers works on supply of continuous electrical signals and display outputs continuously. Side rule is an example analog device in which numbered as expressed as distances.

A machine associated with card-based data processing is Collator

Sorting refers to the process of putting a set of data in a specified order, while collating refers to the process of comparing two strings to determine which is “greater”, or if they are equal. ... Sorting, in turn, is needed to allow other kinds of processing to occur.

In analog computer Input is never converted to digital form.

A device that processes infinitely varying signals, such as voltage or frequencies. A thermometer is a simple analog computer. ... Although special-purpose, complex analog computers are built, almost all computers are digital. Digital methods provide programming flexibility.

An analog computer is a computer which is used to process analog data. Analog computers store data in a continuous form of physical quantities and perform calculations with the help of measures. It is quite different from the digital computer, which makes use of symbolic numbers to represent results.

A good requirement specification should be Unambiguous

Testable (Verifiable) Testers should be able to verify whether the requirement is implemented correctly. The test should either pass or fail. To be testable, requirements should be clear, precise, and unambiguous.

The genetic code is unambiguous: each codon specifies one amino acid only. The code is degenerate. One amino acid may be specified by more than one codon. For instance serine is encoded by six codons, glycine by four and lysine by two.

Synonyms of unambiguous. clear-cut, definite, definitive, explicit, express, specific, unequivocal, univocal. Words Related to unambiguous. avowed, declared, specified, stated. categorical (also categoric), complete, comprehensive, exhaustive, full.

Thesoftware requirements specification lays out functional and non-functional requirements, and it may include a set of use cases that describe user interactions that the software must provide. SRS stands for "Software Requirements Specification."

An example of digital communication is DDT.

DDT was the first modern pesticide and is arguably the most well known organic pesticide. Overall, it is known that DDT concentrates in biological systems (particularly in body fat), that it is a toxin, and that it bioaccumulates up the food chain, reaching its greatest concentrations in higher animals such as humans.

DDT was a commonly-used pesticide for insect control in the United States until it was canceled in 1972 by the United States Environmental Protection Agency (EPA). DDT was initially used by the military in WW II to control malaria, typhus, body lice, and bubonic plague (1).

DDT (dichlorodiphenyltrichloroethane) was outlawed in Britain in 1986 and banned as a pesticide worldwide under the Stockholm Convention in 2001 after it was discovered to be dangerous to wildlife and the environment.

A voice grade telephone line transmits sound waves as continuous electrical signals, which is the definition of analog communication. Laser beams and microwaves are typically used for digital data transmission in modern contexts.

Analog signals can be Carried by combining them with a carrier frequency.

Frequency Division Multiplexing (FDM) is a networking technique in which multiple data signals are combined for simultaneous transmission via a shared communication medium. FDM uses a carrier signal at a discrete frequency for each data stream and then combines many modulated signals.

This set of Computer Networks Multiple Choice Questions & Answers (MCQs) focuses on “Multiplexing”. Explanation: FDM and WDM are used in analog signals. Explanation: Each slot is dedicated to one of the source. Explanation: Transmission rate= frame rate * number os bits in a slot.

An analog signal is a continuous signal that contains time-varying quantities. Unlike a digital signal, which has a discrete value at each sampling point, an analog signal has constant fluctuations.

Human voice is an example of Analog signal.

An analog signal is any continuous signal for which the time-varying feature (variable) of the signal is a representation of some other time varying quantity, i.e., analogous to another time varying signal.

Digital signals must have a finite set of possible values. ... That's the big difference between analog and digital waves. Analog waves are smooth and continuous, digital waves are stepping, square, and discrete.

So, in other words, if you're using a 56Kbps modem to access your Internet service provider (ISP), you have an analog connection from your home to the local exchange. But the ISP has a digital subscriber line (DSL) or a digital termination facility from its location to its exchange.

A signal is any kind of detectable quantity used to communicate information. An analog signal is a signal that can be continuously, or infinitely, varied to represent any small amount of change. Pneumatic, or air pressure, signals used to be used predominately in industrial instrumentation signal systems.