MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Intel 8080 was the first microprocessor. 8080 required multiple voltages and 8085 worked on single voltage.

Detailed explanation-2: -The 8086 microprocessor is a 16-bit microprocessor produced by Intel in 1976. The 8086 microprocessor is the improved version of the 8085 microprocessor. The 8086 microprocessor has a 16-bit data bus, which means it can process 16-bit of data in a single cycle.

Detailed explanation-3: -The 8085 featured a +5-volt power supply through the use of depletion-mode transistors. By contrast, the 8080 microprocessor used +5-volt, -5-volt, and +12-volt power supplies. The use of a single power supply made the 8085 more energy efficient than the 8080.

Detailed explanation-4: -The 8085 has six general-purpose registers to store 8-bit data; these are identified as B, C, D, E, H and L as shown in the figure. They can be combined as register pairs-BC, DE, and HL-to perform some 16-bit operations.