# Monthly Archives: March 2016

## 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 »