SCAS - BCA ANSWER SCHEMES

  Section A 1. What is a microprocessor? A microprocessor is an integrated circuit that functions as the central processing unit (CPU) of a computer, responsible for executing instructions and performing operations such as arithmetic, logic, control, and data transfer.   2.   What is an instruction cycle? The instruction cycle is the process that a CPU follows to fetch an instruction from memory, decode it, and then execute the instruction. 3.  What is an instruction? An instruction is a command in binary format that tells the CPU to perform a specific task, such as arithmetic, logic, or control operations.   4. What is the instruction format of the 8085 microprocessor? The 8085 microprocessor instruction format includes one or more bytes that contain an opcode (operation code) and an operand (the data or address used by the instruction). The instructions can be 1-byte, 2-byte, or 3-...

  1. Merits and Demerits of DVST (Direct View Storage Tube) Merits : Persistent Display : Once an image is drawn, it remains displayed without needing to be refreshed. Low Power Consumption : Since DVST does not require continuous refreshing, it consumes less power. High Resolution : Supports high-resolution displays due to its vector-based design. Demerits : Slow Update Rate : Modifying or erasing images is slow and challenging because the entire screen must be erased and redrawn. Limited Colors : DVST technology typically supports monochrome or limited color displays. Complexity : The hardware is more complex and expensive than raster scan displays. 2. Comparison of Raster Scan and Random Scan Displays Feature Raster Scan Random Scan Drawing Method Scans the screen line-by-line. Draws graphics by plotting points. Refresh Rate ...