Download Advanced Digital Logic Design

Advanced Digital Logic Design
Assignment 1
Sharath K Rangan-1MS12EC112
TEAR DOWN
REPORTOPTICAL MOUSE
Product feature and technical details
Brand Name
Model Number (M/N)
Hardware Platform
Input Device
Connectivity Technology
Interface
Movement Detection
Technology
Dimensions
Warranty
Minimum System
Requirements
System Rating
Resolution
Compatible
with
protocols (FCC)
Federal
:
:
:
:
:
:
:
Acer
M-UVACR1
Windows, Mac, Linux
Mouse
Wired
Universal Serial Bus (USB)
Optical
: 2.4 in x 3.9 in x 1.5 in
: 14 months
: Windows 98, Mac OS 10.3
( Panther)
: 5V DC, 100mA
: 1000 DPI
Communication
Commssions
Product Details
Shipping Weight
: 68gms
Shipping
: This item was also available for
shipping to select countries outside
the U.S.
ASIN
: MS MUV01.005
Item model number
: M-UVACR1
Discontinued by
: No
2
Product Description
The optical mouse actually uses a tiny camera to take 1,500
pictures every second. Able to work on almost any surface, the
mouse has a small, red light-emitting diode (LED) that bounces
light off that surface onto a complementary metal-oxide
semiconductor (CMOS) sensor.
The CMOS sensor sends each image to a digital signal processor
(DSP) for analysis. The DSP, operating at 18 MIPS (million
instructions per second), is able to detect patterns in the images
and see how those patterns have moved since the previous image.
Based on the change in patterns over a sequence of images, the
DSP determines how far the mouse has moved and sends the
corresponding coordinates to the computer. The computer moves
the cursor on the screen based on the coordinates received from
the mouse. This happens hundreds of times each second, making
the
cursor
appear
to
move
very
smoothly.
Optical mice have several benefits over wheeled mice:
 No moving part means less wear and a lower chance of
failure.
 There's no way for dirt to get inside the mouse and interfere
with the tracking sensors.
 Increased tracking resolution means smoother response.
 They don't require a special surface, such as a mouse pad.
LIST OF COMPONENTS














Capacitor C1
Capacitor C2
Capacitor C3
Capacitor C4
Capacitor C5
Capacitor C6
Resistor R1
Resistor R2
Resistor R3
Resistor R4
Resistor R5
Red color LED
USB Connector ( 5 pin
Switches ( 3 no’s)
:
:
:
:
:
:
:
:
:
:
:
104 : 100nF (ceramic)
2.2μF, 50V(electrolytic)
2.2μF, 50V(electrolytic)
104 : 100nF (ceramic)
47pF (ceramic)
47pF (ceramic)
177.8Ω (Standard value=180Ω)
13.62k Ω (Standard value=15kΩ)
1.493kΩ (Standard value=1.5kΩ)
1Ω (Standard value=1Ω)
1Ω (Standard value=1Ω)
male jumper)
3








Scroll wheel
Support for Scroll wheel
Plastic case for LED
Mouse Case ( Plastic)
USB Cable
No screws as mouse was a press fit assembly
S2599 Optical Sensor IC (Made by Agilent Technologies)
HDNS-2100 (Lens Assembly)
DESCRIPTION OF EACH COMPONENT
1) Capacitors: 100nF (Ceramic) C1,C4
Epoxy Coated Axial Leaded Multilayer Ceramic Capacitor
Lead Spacing
: 0.1" (2.54mm)
Manufacturer
: AVX
Manufacturer Number : C324C104M5U5CA
Descripton:
Capacitor 0.1μF, 50V, X7R, 0805
Dielectric Characteristic :X7R
Capacitance
:0.1µF
Capacitance Tolerance :± 10%
Voltage Rating
:50V
Temperature Coefficient:± 15%
Capacitor Case Style
:0807
No. of Pins
:2
2) Capacitors: 47pF (Ceramic) C5,C6:
Epoxy Coated Axial Leaded Multilayer Ceramic Capacitor
Lead Spacing
: 0.1" (2.54mm)
Manufacturer
: Kemet
Manufacturer Number : S363C1034M5U5SG
Description:
Product Range
: KEMET - C Series
Capacitance
: 47pF
Capacitance Tolerance : ± 5%
Dielectric Characteristic : C0G / NP0
Voltage Rating
: 50V
Operating Temp. Min : -55°C
Operating Temp. Max : 125°C
Capacitance Tolerance ±: ± 5%
4
No. of Pins
:2
Operating Temperature Range: -55°C to +125°C
Terminal Type: Surface Mount (SMD, SMT)
Tolerance +
: 5%
Tolerance : 5%
Voltage Rating V DC
: 50V
3) Capacitors: 2.2µF C2,C3 ( Electrolytic)
2.2uF 50V High Temp Radial Capacitor
Description:
Make
Capacitance
Voltage
Tolerance
Maximum Temperature
Case Size
Lead Configuration
:
:
:
:
:
:
:
Jakec
2.2 µF
50V
20%
+105°C, 2000hrs
5 x 11mm
Radial
4) Resistors (R1,R2, R3):
Description:
Manufacturer: National Resistors
0.25W rating
R1=180 Ω (±10% tolerance)
R2=15K Ω (±10% tolerance)
R3=1.5kΩ (±10% tolerance)
5) Resistors( R4, R5):
Description:
Manufacturer: National Resistors
Surface Mounted Short circuit resistors.
5
6) Red color LED:
Description:
1.8-2.2VDC forward drop
Max current: 20mA
Suggested using current: 16-18mA
Luminous Intensity: 150-200 mcd
7) USB Connector:
Description:
Contact resistance 30 m Max.
Dielectric strength 750 VAC Min.
Durability 1500 cycles
Capacitance Max. 2pF (1K Hz test)
Temperature storage 40°C to +60°C
Temperature life 1μs or longer duration. 85°C for 250 hours.
Humidity 96 hours at 40°C with 90% to 95%RH.
8) Switches ( 3 Nos):
Description:
Make: Zip
Single Pole Single Throw type switch.
Features:
Mechanical life: 500000 cycles
Temperature Range: -27 to 85 degree Celsius
Contact resistance: 20mΩ
H.V test: IKVAC for 1 minute
6
9) Scroll Wheel:
Description:
Manufacturer: Logitech
A scroll wheel is used to navigate up and down through web pages,
documents. It can also be used as a switch by just clicking on it. In
some mice, it can rotate even horizontally or vertically.
This scroll wheel does not work on the basis of a mechanical
encoder like most mice. It works on the principle of a rotary
encoder. There’s an LED pointed at two phototransistors (light
detectors) in it, as well as a circle of tiny black posts that pass
between the LED and the detectors. When the posts pass in front of
the detectors, the IC reads them and is able to determine which
direction they are going and increments or decrements a variable
that one can access.
The rotary encoder concept is also used in trackballs. is an electromechanical device that converts the angular position or motion of a
shaft or axle to an analog or digital code. There are two main types:
absolute and incremental (relative). The output of absolute
encoders indicates the current position of the shaft, making
them angle transducers. The output of incremental encoders
provides information about the motion of the shaft, which is
typically further processed elsewhere into information such as
speed, distance, and position.
10) USB Cable:
Description: USB stands for Universal Serial Bus. It is a industry
standard protocol which is used for communication between
computer and other electronic devices. It was founded in the mid
1990’s and today, its popularity has increased immensely. It is used
almost everywhere.
11) S2599 IC:
Description:
Manufacturer: Avago Technologies
7
Features:
One chip USB mouse sensor
USB 2.0 Low Speed Compliance
12 bits USB motion data reporting
Single 5.0 volts power supply
High speed motion detection at 30 inches per second
(ips) and acceleration up to 8 g
Input buttons: 3 buttons
Integrated oscillator
Working:
The ADNS-2700 is a compact, one chip USB optical mouse sensor
designed for implementation of a non-mechanical tracking engine in
computer mice.
It is based on optical navigation technology that measures changes
in position by optically acquiring sequential surface images (frames)
and mathematically determining the direction and magnitude of
movement. There are no moving parts and precision optical
alignment is not required, thus facilitating high volume assembly.
Default resolution is specified as 1000 counts per inch, with rates of
motion up to 30 inches per second.
12) HDNS-2100 lens assembly:
Description:
Manufacturer: Agilent Technologies (Agilent technologies has been
bought out by Avago Technologies)
Working: It is a solid state lens which is used as a lens assembly in
optical mice.
It is a precision component and should be handled with care.
8
Bill of Materials:
COMPONENT NAME
CAPACITOR
: 100nF (CERAMIC)
CAPACITOR
: 2.2μF, 50 V(ELECTROLYTIC)
CAPACITOR
: 47pF (CERAMIC)
RESISTANCE: R1 (180 ± 5%) OHMS
RESISTANCE : R2 (15 ± 5%)KILO OHMS
RESISTANCE: R3( 1.5 ±5%) KILO OHMS
RED COLOR LED
SMT RESISTORS: SHORT CKT RESISTORS
USB CONNECTOR
S2599 IC
SWITCHES
MOUSE CASE (Plastic)
SCROLL WHEEL AND ROTARY ENCODER
SPRINGS
LENS ASSEMBLY
USB CABLE
LIGHT DETECTOR
JJ
PRICE
QTY
Rs 5
2
Rs 2
2
Rs 1.5
2
Rs 3
1
Rs 4
3
Rs 1.5
1
Rs 1
1
Rs 2
2
Rs 6
1
Rs 20
1
Rs 0.5
3
Rs 5
1
Rs 10
1
Rs 1
3
Rs 10.6
1
Rs 30
1
Rs 10
1
H H
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Additional Cost:
Shipping: 1Rs
Sticker: 0.5Rs
Verification: 1Rs
Conclusion:
The final cost which includes cost of all components and other
miscellaneous expenses comes up to roughly Rs 116/Acer company sells this mouse at 184/Therefore, retail cost- actual cost= 184-116
=Rs 58/The market price is approximately 31.5% higher than the estimated
production cost. It is observed that the estimated components cost
shall drastically reduce if purchase is made on a bulk basis.
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