Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. What is Small Computer Systems Interface?
The other well-liked way is to connect a disk drive to a PC by a SCSI interface. Common drive choice for high-end workstations or servers with drive capacities varies from 100MB to 20GB and rotation speed 7200RPM. It is a ordinary I/O interface between adapter and disk drives or any other peripheral it implies that CD-ROMs drives, tape drives, printers etc.
SCSI (pronounced 'scuzzy') is an important and interesting variation of separate device controller idea for each device. It employs a generic device controller (known as SCSI controller) on computer system and permits any device with an SCSI interface to be directly associated to SCSI bus of SCSI controller. SCSI interface of a device comprises all circuitry that device needs to operate with computer system.
As shown in Figure below a SCSI controller connects directly to computer bus on one side and controls another bus (known as SCSI bus) on other side. Because SCSI controller is connected to computer's bus on one side and to SCSI bus on other side it can be communicated with processor and memory and can also control devices associated to SCSI bus. SCSI bus is a bus designed for associating devices to a computer in a uniform way.
These drives have fast access time and high data rates however are expensive. One benefit of these drives is that a single SCSI controller can communicate concurrently with up to seven 16-bit SCSI devices or up to 15 wide or Ultra-Wide devices. Every device should be assigned a unique SCSI identification between 0 and 7 (or 15).
Figure: SCSI Drive Interface Standards
Internal Path length It is described as the number of node traversed while moving by one particular node to any other node in the tree.
What are the use of job queues, ready queues and device queues? As a process enters a system they are put in to a job queue. These queues having of all jobs in the system. The
Capacity: Raw capacity Total amount of stored information that a medium or storage device can hold is expressed as a quantity of bytes and bits (for example 10.4 megabyte
The voltage waveforms shown in given fig. are applied at the inputs of 2-input AND and OR gates. Determine the output waveforms. Ans. The Output waveforms for AND and O
explain about cloud computing
What is data hazard in pipelining? What are the solutions? A data hazard is a situation in which the pipeline is stalled due to the data to be operated on are delayed for some
The advantage of using a Database Management System The advantage of using a Database Management System for a data store is that databases have mechanisms for describing data,
Q. What are cosmic rays? The ionising radiation several times stronger than γ-rays entering the earth from all the directions from cosmic or interstellar space is known as cosm
What is data hazard? Any condition that causes the pipeline to stall is known as a hazard. A data hazard is any condition in which either the source or destination operands of
Define interrupt and ISR? An interrupt is a request from an I/O device for service by the processor. The processor gives the requested service by implementing the interrupt ser
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd