rahul_12_21

Thanks a lot for the reply........I will apreciate if you can explain in a little bit more detail ? I was looking at the cost of digital to analog converters and they are pretty costly. Is it possible to make this complete circuit under $20 ? I want 3 capailities - 1. All the 50 messages should play by themselves one by one in a defined sequence.(If a master switch is pressed) 2. Any message can play depending on the switch pressed. 3. All the 50 messages should play one by one randomly. Is it a very complicated thing ? I mean I can draw its flow chart and logical flow very easily but not sure of complexity of the electronics involved.

Still looking for help......

Hello to all the forum members. This is my first post. A little bit about myself -- I completed my degree in Electronics and communications in 2000.Since then till now I never did anything related to electronics and am working in Software Industry.However I was always very interested in digital logic. Now I have developed a passion for electronics again and want to do something in this field.May be start a small company ,making innovative circuits or something like that. I know this will take time and I am ready for it. To begin with I started refreshing my concepts,purchased some DIY Kits etc. and now I am looking forward towards Microcontrollers. That's it at this time,lemme jump to my question. =========================================================================== Is the below circuit practically possible ? if yes, what will be the complexity and cost involved. if someone can through some ideas about how to begin - I will greatly appreciate that. Assume there are 50 switches on a board. S1,S2......S50. If I press S1 a message(M1) of length 30 seconds should be played.If I press S2 - Message M2 of 30 sec. should be played and so on..... Question - Where and how I can store these 50 messages ?? Is there some IC which can hold a 30 sec. msg and I can have 50 such IC's ?