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Operating SystemDescribe seek time, rotational latency, random-access time and their relationship in context of magnetic disks by drawing its moving – head mechanism.20227mRobotics Sensors and Actuators Write short note on: 2D and 3D velocity measurement20247mOPERATING SYSTEMThe time to move the disk arm to the desired cylinder in hard disk is known as (i) rotational latency (ii) seek time (iii) positional time (iv) disk time20232mSignal Conditioning and Data Acquisition SystemA microcontroller system needs to store real-time vibration data at 10 kSamples/s, each sample being 16 bits. (i) Calculate the minimum memory size required for storing 5 minutes of data. (ii) Suggest a suitable data storage interface (SPI/I2C/Parallel) and justify with bandwidth calculations.20257m
PreviousDiscuss critical section problem. Illustrate the classic software-based solution to this problem known as Peterson's solution.NextSuppose that a disk drive has 5000 cylinders, numbered 0 to 4999. The drive is currently serving a request at cylinder 2150, and the previous request was at cylinder 1805. The queue of pending requests, in FIFO order, is: 2069; 1212; 2296; 2800; 544; 1618; 356; 1523; 4965; 3681. Starting from the current head position, what is the total distance (in cylinders) that the disk arm moves to satisfy all the pending requests for FCFS, SCAN and C-SCAN disk-scheduling algorithms? Draw the head movement diagram also.
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