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.

bytes

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.