Forth generation, Electrical Engineering

Forth Generation

VLSI  technology  of IC made it possible  to design the  complete  circuit  of ALU  Arithmetic  logic unit and cu ( Control Unit ) within  single  chip  which  comprises  teh main proc3essing  part called  central  processing  unit (CPU) of computer systems  see this chip  was named microprocessor.  The main  different between third  & forth  generation is the  invention of microprocessor ( Processor  on single chip)  although in both  generation technology  of IC issued. We  identify the microprocessor by a chip  number  given to the it. Since  it is the most important part of a computer  system we identify the whole  computer system by that chip  number of the microprocessor. For example  we usually  say that we  are working  on 80386, 80486 or Pentium ( 80586) computer. Actually  these  are the number  given by  the microprocessor used  inside  that computer.

Intel 4004 (first 4 bit microprocessor )  Intel 8008 ( 8 - bit processor )  Intel 8080 Zilog  Z 80 and Motorola  6800  were few early microprocessor of this  generation which  had the  features  of addressing mode  and instruction type. Due to very fast  growth  in the technology and  demand  a series of  microprocessors  were invented  in a very  short  period  like  Intel 8085,8088,8016,80286,80386,80486,then Pentium ( 805686).

2455_Forth Generation.PNG

                                                  Figure Basic Block Diagram of Computer Systems

Here are the  main  features of various  Intel  processor:

8085 :  8 bit  processor  8 bit  data  bus 8 bit  general  purpose  register 16 bit address bus  which can access 64 K of memory  simple  architecture.

8086 :  16 bit  processor 16 bit  data bus  16 bit  general purpose registers 20 bit address bus  which can  address 1MB of memory first member of 80 x 86 family concept  of segmented memory new instruction set supported by all  upcoming  processor  of the family of  80 x 86 .

80286 : Similar to 8086  except it has 8 bit  address bus which  can address  16 MB  of storage new memory management provides virtual storage space  of 1GB allows larger program to   run operates in two  addition of  new registers.

80386:  32 bit processor with data  bus of 32 bit address but 32 bit  capable  of accessing 4GB of physical  memory  and over  64 trillion bytes of virtual  storage general  purpose  resisters are  extended to 32 bit  with addition of new  registers.

80486 : Similar features as 80386  with a new feature  of cache memory  internal architecture  redesigned which  reduces  the execution time of  same in  structions of 80386  has on chip  co processor  earlier external co processor was required.

Pentium :  63 bit  processor  with 64 bit data bus 32 bit address bus it is a mixture of CISC ( Complex instruction set computer) and  RISC  ( Reduced Instruction Set Computer ) has separate 8 KB data  and instruction cache  dual  integer  pipelines and  prediction.


Posted Date: 4/3/2013 5:14:46 AM | Location : United States

Related Discussions:- Forth generation, Assignment Help, Ask Question on Forth generation, Get Answer, Expert's Help, Forth generation Discussions

Write discussion on Forth generation
Your posts are moderated
Related Questions
A three-phase, 4160 V, 60 Hz, 3000 kVA generator supplies the following three phase loads:  A 00 kVA at .7 pf lagging, D 00 kVA at .9 pf lagging, and C 50 kVA at unity pf.

20 cells with emf 1.45V and internal resistance 0.5Ω for each cells is linked 4 rows which every rows having of 5 cells in series. Load resistance 15Ω is connected to the battery.

A flyback converter is to be designed so that it operates in continuous "current" (flux) mode with a duty cycle of D = 0.45 when input voltage V s = 48 V, output voltage V o = 30

Q. Common-Drain JFET Amplifier? Figure (a) shows a CD JFET amplifier in which resistors R 1 , R 2 , and R SS are selected by the bias design, and capacitors CG and CS are chos

Q. Find the exponential form of the Fourier series of the periodic signal given in Figure. Also determine the resulting series if T = 2τ .

DC Load line

Q. What are the applications of a R-C coupled amplifier. The R-C coupled amplifiers have excellent audio fidelity over a wide range of frequency. Therefore, they are widely use

Microprocessors: We have learnt 8085 family of microprocessors. Initially, we understand basic components of a computer, 8085 microprocessor architecture and assembly language

show the decoding logic for 11011 code if an active high and an active low output required

Limitations: 1. Silicon transistors do not function at voltages much higher than about 1,000 volts (SiC devices can be worked as high as 3,000 volts). In difference, electron