Tag Archives: Jun2008


Write a program in 8086 assembly Ianguage that converts each character of string to upper case and to the next character 7m Jun2008

Write a program in 8086 assembly Ianguage that accepts a character string, of maximum 10 characters, from the keyboard, converts each character of string to upper case and converts each character to the next character. i.e. A to B, B to C,and so on. Finally display the string on the screen. 7m Jun2008   DATA… Read More »

Explain the working of DVD-ROM with ihe help of block diagram. 4m Jun2008

Explain the working of DVD-ROM with the help of block diagram. 4m Jun2008   CD-ROM and DVD-ROM Optical disks use Laser Disk Technology, which is the latest, and the most promising technology for high capacity secondary storage. The advent of the compact disk digital audio system, a non-erasable optical disk, paved the way for the… Read More »

Explain the operation of a micro programmed control unit with the help of a diagram. 8m Jun2008

Explain the operation of a micro programmed control unit with the help of a diagram. 8m Jun2008   THE MICRO-PROGRAMMED CONTROL The logic of the control unit is specified by a micro-program. A micro-program is also called firmware (midway between the hardware and the software). It consists of: (a) One or more micro-operations to be… Read More »

Draw the state table and the logic circuit for a 3-bit binary counter using D flipflop. 5m Jun2008

Draw the state table and the logic circuit for a 3-bit binary counter using D flipflop. 5m Jun2008 Binary counter A digital circuit which has a clock input and a number of count outputs which give the number of clock cycles. The output may change either on rising or falling clock edges. The circuit may… Read More »

Give block diagram of DMA controller. How does the CPU initialize the DMA transfer? 5m Jun2008

Give block diagram of DMA controller. How does the CPU initialize the DMA transfer? 5m Jun2008 Device Controller A device controller need not necessarily control a single device. It can usually control multiple I/O devices. It comes in the form of an electronic circuit board that plugs directly into the system bus, and there is… Read More »

Explain briefly the working of two-pass assembler. 5m Jun2008

Explain briefly the working of two-pass assembler. 5m Jun2008   Two-pass assembler: Assemblers typically make two or more passes through a source program in order to resolve forward references in a program. A forward reference is defined as a type of instruction in the code segment that is referencing the label of an instruction, but… Read More »

List three differences between Dynamic RAM and Static RAM. 3m Jun2008

List three differences between Dynamic RAM and Static RAM. 3m Jun2008 Static RAM   ü  SRAM uses transistor to store a single bit of data ü  SRAM does not need periodic refreshment to maintain data ü  SRAM’s structure is complex than DRAM ü  SRAM are expensive as compared to DRAM ü  SRAM are faster than… Read More »

Draw logic circuit for a converter that converts 4 bit binary input to its equivalent BCD number. 8m Jun2008

Draw logic circuit for a converter that converts 4 bit binary input to its equivalent BCD number. 8m Jun2008 A four bit number can be any number value between 0 to 15  i.e.  0 to F in Hexadecimal. BCD is a number which is represented in binary as a decimal number hence it can have… Read More »

Write an 8086 assembly language program that finds the smallest and the second smallest number from a list of 10 numbers stored in memory. 7m Jun2008

Write an 8086 assembly language program that finds the smallest and the second smallest number from a list of 10 numbers stored in memory. 7m Jun2008 To understand program for Largest or Smallest in an array in detail Please Click this link below http://cssimplified.com/computer-organisation-and-assembly-language-programming/an-assembly-program-for-finding-the-largest-number-in-array-of-10-elements DATA SEGMENT ARR DB 5,3,7,1,9,2,6,8,4 LEN DW $-ARR SMALL DB ? SECOND… Read More »

A computer has 64 words RAM with a word size of 16 bits and a cache memory of 8 Blocks with block size of 32 bits. 9m Jun2008

Assume a computer having 64 word RAM and cache memory of 8 blocks. Where can we find memory location 25 in cache when the following are used:  (i) Direct mapping (ii) Associative mapping (iii) 2-way set associative (2 blocks per set) mapping Assume 1 word – 16 bits, block size = 32 bits. 9m Jun2008 … Read More »