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E-TUTOR FOR PRESCHOOL KIDS
OBJECTIVE:
• The objective of this project is design the project for a teaching the preschool kids using simple embedded unit.
BLOCK DIAGRAM:
MICROCONTROLLER:• A microcontroller is a complete microprocessor
system built on a single IC. Microcontrollers were developed to meet a need for microprocessors to be put into low cost products. Building a complete microprocessor system on a single chip substantially reduces the cost of building simple products, which use the microprocessor's power to implement their function, because the microprocessor is a natural way to implement many products.
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FEATURES:
• 4K In build flash type program memory• 128 bytes in build data memory• 4 I/O ports,• Port 0• Port 1• Port 2• Port 3
KEYPAD:
• It is a set of key, which is used to select a process in our project. It is conneceted with microcontroller.
LCD DISPLAY:
• Liquid crystal displays (LCDs) have materials which combine the properties of both liquids and crystals. Rather than having a melting point, they have a temperature range within which the molecules are almost as mobile as they would be in a liquid, but are grouped together in an ordered form similar to a crystal.
WTV 40 VOICE IC:
• Here we use WTv040 as a voice record and play back IC.
• This IC is used to give voice alert.• Support MIC and LINE -IN recording; • Can record up to 252 segments voice
(including fixed voice); • Operating voltage: DC2.6 ~ 3.6V, sleep current
:10uA (typical).
CIRCUIT DIAGRAM:
WORKING PRINCIPLE:
• keypad output is connected with Microcontroller.
• Due to the signal from keypad Microcontroller activates the corresponding voice. The Voice IC device stores and reproduces voice signals in their natural analog form, eliminating distortion.
ADVANTAGES:
• Highly Accurate voice recording and play back
• Low Cost to assemble the project• Less maintenance for years• Automatic and can work at any environment
APPLICATIONS:
• This Project is very useful for children's in homes.