This document summarizes the process by which a mouse click on a hyperlink leads to viewing new information on a computer monitor. It involves signals being sent from the brain to the hand to click the mouse, which sends information to the processor. The processor gives control to the browser, which connects to the server requesting information. The new page is then displayed on the monitor for the brain to view via the eyes. Each action starts in the brain and the results are perceived by the brain, demonstrating the connection between brain and computer during everyday computer usage.

1. Brain To Brain
A mouse click on a hyperlink
Anirudh Tomer
Toshish Jawale

2.  Are we audible ?
 Audience Classification
 Introducing self
 Daemon Blogs
 Brain to Brain
Lets know each other

3.  Brain Sends Signals to Hand, to click
 Mouse sends info to processor
 Processor gives control to browser
 Browser connects to server and request
for information
 Monitor shows the new page
 Brain views new page via eyes
Every Action that we do starts from
our brain and the results of that action
are also perceived by our brain.
A mouse click on hyperlink

4. • 2 hrs for session
Session
• 15 mins for QA
QA
• QA in b/w
Freedom • Have refreshment in b/w
Session Parameters

5.  Working of two machines
a) Human Brain (in brief)
b) Computer (in detail)
 What Computer Engineers do
 What computer science is
 Our actions lead to chain of
Technical and Biological actions which lead to
numerous changes in our environment.
Lets understand

6.  Video
Brain To mouse

7. RAT MOUSE

8. Dissection of a Mouse

9. Inside a Mouse

10. Eyes of a mouse

11.  Apple Desktop Bus (ADB)
 RS-232
 Bus Mouse Interface (BMI)
 PS/2
 USB
Possible ways to communicate

12.  Features:
◦ Synchronous
◦ Simple & Cheap
◦ Works with PS/2 compatible I/O devices
◦ No hot plugging
◦ Durability issues
◦ Fault isolation
PS/2: Personal System/2

13. USB: Universal Serial Bus

14. UHCI
Universal Host Universal Host
Controller Controller
(HC) Driver (HCD)
UHCI: Universal Host Controller
Interface

15. USB System

16. Isochronous Interrupt
Control Bulk
Data transfer types

17. Isochronous Interrupt
Used by Mouse
Control Bulk
Data transfer types

18. USB Physical topology (tiered
Start topoloty)

19. Logical Bus Topology

20.  USB 2.0 standard CONTROLLER
HOST
(I am the Boss)
Host controller polls bus for interrupt
request
USB 3.0
Fast devices can request host controller
Pen
Keyboard Mouse
Drive
directly
Mouse to
USB HOST Controller

21. See Note below Processor
(I am god)
Let me finish the
Hey dude!!! current work, will
Here is the
there is an get back to you
interrupt for Okay interrupt
later put the
number
interrupt
you (INTA)
(INT) number on the
bus
(INTA)
USB Host Controller
(I am the boss)
USB HOST Controller To Processor

22. Logical Diagram

23. Interrupt Handling Data
Structures

24.  Interrupt vector table implemented using
the data structure IDT (interrupt
descriptor table
 Device driver routine called.
 X server registers callback with Composite
window manager
(wayland display server is used now)
 X server gives control to active window
and pass it the the message as well.
Processor to Browser

25. X server

26.  Microsoft Windows—the Desktop Window
Manager
 Mac OS X—the Quartz Compositor
 GNU/Linux, FreeBSD and OpenSolaris—
Compiz, KWin, and Mutter.
Composite Window Manager

27. Video RAM
Outputs
Frame
Buffers
CRTCs (CRT
Cursor
Controllers)
Images
Offscreen
Rendering
Buffers PLLs
Video Card

28. Browser uses system calls to use
network card services
Routers help us in sending the
information to right address
Network card sends the information
back to application via OS api
(system calls)
Browser to Server

29. Processing HTML

30. X server
Information
to be shown
on screen Buffer
Monitor
Monitor

31. Monitor

32. Eyes to Brain

33. Session
QA
Feedback
Brain to Brain
Fusion Science

34. Contact • anirudhtomer@gmail.com
• Contact for:
Anirudh Tomer Linux, AI, Networking Programming
• Music: Trance or Metal
• Designing Posters
Thank You
Everyone
MCUG toshish.jawale@gmail.com
• Rocks m/
Contact • Contact for:
Linux, AI, Computer Architectures
Toshish Jawale • Music: Indian Classical and playing
musical instruments
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