Test: Microprocessor of Embedded System - Computer Science Engineering (CSE) MCQ

Explanation: Designed by Zilog in 1976. 80386 and 8087 are the processors designed by Intel and Zigbee is IEEE based which is used for high-level communication protocol.

Explanation: Its architecture is based on Intel 8080 but has an extended instruction set and hardware improvement.

Explanation: The flag register of Z80 contains status information such as carry, overflow, signed etc.

Explanation: Z80 have two sets of registers which are main registers and alternate registers.

Explanation: In order to identify the main register and alternate register ‘ is used in the suffix.

Explanation: In addition to the general purpose registers, a stack pointer, program counter, and two index registers are included in Z80. It was also used in many embedded designs because of its high-quality performance and for its in-built refresh circuitry for DRAMs.

Explanation: It is the maximum clock frequency or runs time of the processor.

Explanation: The Interrupt vector(IV) register is used in the interrupt handling. Mode 2 is used to point the required software routine to process the interrupt. In mode 1, the interrupt vector is supplied via the external data bus.

Explanation: Only one set of registers can be used at one time and the switching of registers and data transfer is performed by the EXX instruction.

Explanation: Registers B, C, D,E, H and L are 8-bit general-purpose registers that can be concatenated to produce 16 registers known as BC, DE, and HL.