## Why coprocessors are used in microprocessors system?

A coprocessor offloads specialized processing operations, thereby reducing the burden on the basic microprocessor circuitry and allowing it to work at optimum speed.

### What is the use of 8087?

The Intel 8087, announced in 1980, was the first x87 floating-point coprocessor for the 8086 line of microprocessors. The purpose of the 8087 was to speed up computations for floating-point arithmetic, such as addition, subtraction, multiplication, division, and square root.

**How do coprocessors work?**

By taking specialized processing tasks from core CPU, coprocessor reduces the strain on the main microprocessor, so that it can run at a greater speed. A coprocessor can perform special tasks like complex mathematical calculations or graphical display processing. They perform such jobs faster than core CPU.

**What can I do with a Xeon Phi?**

Xeon Phi is a series of x86 manycore processors designed and made by Intel. It is intended for use in supercomputers, servers, and high-end workstations. Its architecture allows use of standard programming languages and application programming interfaces (APIs) such as OpenMP.

## How many types of coprocessors are there?

Data types include 16-, 32- and 64-bit signed integers; 18-digit BCD data; and 32-, 64- and 80-bit (extended precision) floating-point numbers.

### What is CP15 in ARM?

CP15, the System Control coprocessor, provides control of many features of the core. It can contain up to sixteen 32-bit primary registers. Access to CP15 is privilege controlled and not all registers are available in User mode.

**What are the 80387 data types?**

All 80387 floating point types except packed BCD are supported. (BCD support may be added without much difficulty). These data types are 16-, 32-, and 64- bit integers, and single (32-bit), double (64-bit), and extended (80-bit) precision floating point.

**What are the types of coprocessors?**

There are various types of coprocessors available to perform unique tasks – from I/O interfacing or encryption, string processing, floating-point arithmetic and signal processing.

## How many types of basic multiprocessor configuration are there?

three basic multiprocessor configurations

Multiprocessor means a multiple set of processors that executes instructions simultaneously. There are three basic multiprocessor configurations.

### What is difference between processor and coprocessor?

The difference between processor and Coprocessor is that the processor is the main processing unit of the computer that performs arithmetic, logic and control operations according to the instructions while the coprocessor is a specialized processor that supports the main processor.

**What are data types of 8087?**

The standard specifies and the 8087 supports three floating-point data types: Real (single precision), Long Real (double precision) and Tem- porary Real (extended precision). All formats are binary and each has a biased exponent.

**What is a math co processor?**

A mathematical circuit that performs high-speed floating point operations. Also called a “floating point unit” (FPU), the math coprocessor may be a stand-alone chip or circuits built into the CPU.

## What is the difference between the 80287 and the 80387?

Other 287 models with 387-like performance are the Intel 80C287, built using CHMOS III, and the AMD 80EC287 manufactured in AMD’s CMOS process, using only fully static gates. The 80287 and 80287XL work with the 80386 microprocessor and were initially the only coprocessors available for the 80386 until the introduction of the 80387 in 1987.

### What is the 80187 CPU?

The 80187 ( 80C187) is the math coprocessor for the Intel 80186 CPU. It is incapable of operating with the 80188, as the 80188 has an eight-bit data bus; the 80188 can only use the 8087.

**What is the difference between 8087 and i387?**

The 80387 ( 387 or i387) is the first Intel coprocessor to be fully compliant with the IEEE 754-1985 standard. Released in 1987, a full two years after the 386 chip, the i387 includes much improved speed over Intel’s previous 8087/80287 coprocessors and improved characteristics of its trigonometric functions.

**What is the 8087 FPU?**

The 8087 was the first math coprocessor for 16-bit processors designed by Intel. It was built to be paired with the Intel 8088 or 8086 microprocessors. (Intel’s earlier 8231 and 8232 floating-point processors, marketed for use with the i8080 CPU, were in fact licensed versions of AMD’s Am9511 and Am9512 FPUs from 1977 and 1979. )