# Monthly Archives: July 2015

## Design an algorithm, draw a corresponding flowchart and then write a program in C to convert a given string to lower case. 10m Jun2008

Design an algorithm, draw a corresponding flowchart and then write a program in C to convert a given string to lower case. 10m Jun2008   Algorithm Step 1: Input String Step 2: Initilise Pointer C to initial character of String Step 3: while(C != NULL) { if (*C>=’A’ && *C<=’Z’) { *C=*C+32 } Step 4:… Read More »

## A computer has 32 words RAM with a word size of 16 bits and a cache memory of 4 Blocks with block size of 16 bits. 10m Dec2007

Assume a computer has 32 words RAM each having a word of 16 bits and a cache memory of 4 blocks, with each block having 16 bits. Where can we find a main memory address 21 in the cache (if it exists) if (i) Set associative mapping is used? (ii) Direct mapping is used? (iii)… Read More »

## Find the average access time for the disk. 4m Dec2007

Seek time on a hard disk is 50 ms. it rotates at a speed of 3000 rotations/sec. Each track on the disk has 100 sectors. Find the average access time for the disk. 4m Dec2007 Disk Rotation Speed = 3000 rps.  (i.e. 180000 rpm) Sectors per Track = 100 sectors Seek time = 50 millisecond  … Read More »