Graphic design python turtle 🐢

By Kajal Vishwakarma -
from turtle import * import colorsys bgcolor('black') pensize(0) tracer(50) h=0 for i in range(300): c=colorsys.hsv_to_rgb(h,1,1) h+=0.9 color(c) forward(300) left(100) fd(i) goto(0,0) down() rt(90) begin_fill() circle(0) end_fill() rt(10) for j in range(5): rt(30) done() Please follow my blog and subscribe my channel for more videos and newly updates 👍👍👍👍👍 import turtle as t import colorsys t.bgcolor('black') t.tracer(100) h=0.4 def draw(ang,n): t.circle(5+n,60) t.left(ang) t.circle(5+n,60) for i in range(200): c=colorsys.hsv_to_rgb(h,1,1) h+=0.005 t.color(c) t.pensize(2) draw(90,i*2) draw(120,i*2.5) draw()
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What is Operating System ? Difficulties involved in Writing an Operating System for a realtime environment.

By Kajal Vishwakarma -

What is an operating system ? Difficulties involved in Writing an Operating System for a real-time environment.

An operating system may be viewed as an organized collection of software extensions of hardware, consisting of control routines for operating a computer and for providing an environment for execution of programs. Other programs rely on facilities provided by the operating system to gain access to computer system resources, such as files and input/output (I/O) devices. Programs usually invoke services of the operating system by means of operating-system calls. In either case, the operating system acts as interface between users and hardware of a computer system.

Difficulties involved in Writing an Operating System for a Real time Environment- The main difficulties are keeping the operating system within the fixed time constraints of a real-time system. If the system does not complete a task in a certain time, it could cause a breakdown of the entire system it is running. Therefore, when writing an operating system for a realtime system, the writer must be sure that his scheduling schemes do not allow response time to exceed the time constraint.

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