y?

i got 1 last asgmnet on microcontroller

mayb need alien help to check my assembly language.. Mechanical students ask do electronic subject like totaly new

y ? want grad liao ?
8am class. 

Hi guys,
We are going to organize a National Speed Typing Contest 2011,
the organizer is Team TAC, Winner of MSC-IHL Business Plan Competition 2010/2011 who from MMU!!!!     http://www.mmu.edu.my/index.php?req=56&artid=152
This event has already got endorsement from Timbalan Menteri di Jabatan Perdana Menteri, and Fully Supported and by JCI Mines Malaysia.
We even approached the GM of Microsoft Malaysia in KLCC, Mr. Azli, he even suggested and offered us to held this event in Microsoft Auditorium, KLCC.

The mission of this event is to break two Malaysia Books of record,
1. Most Typist Event
2. Fastest Typist of Malaysia
(we have also approached Malaysia Books of record also. )

We are opening the opportunity to MMU students first to join our Organizing Committee as we are from MMU!   
anyone interested can PM me, or email me. (truthwind@gmail.com)

Forgot to mention, the period of this event will be in
1st July to 31st July for online contest
and we gather the Top 200 typist to have a Live contest in Microsoft Auditorium, KLCC on 27th August.

Thanks and best regards,
Nicholas Koay Zhen Lin
Event Director of Speed Typing Contest 2011
Team TAC
truthwind@gmail.com
[typing via tac]

i also planning to use two 331MHz and 443Mhz to do.. as based on the pt2262 and pt2272 datasheet say i can set address on both so only same address for 1 encoder and 1 decoder

delay method cant be used because i may have to sent 11111111B simultaneously because i will be controlling 4motor and 4 sensor at the same time

BTW where can i get the chemical ?

Two 433Mhz RF receiver/transmitter module, and two 4bit data RF encoder(PT2262) and two 4bit data decoder(PT2272) basically combining two 4bit data transmission into 8bit data transmission.
Both set of encoder/decoder will have different set of address;

Top encoder/decoder address = HHFFHHLL
Bottom encoder/decoder address = LLHHFFHH

my friend say use this method.. can avoid interference because when transmitting.. the decoder will check for address match or not before decode it.. even u send two same frequency signal only one decoder that is set to the similar encoder address will decode the RF signal via versa 

other way to adjust the antenna cable length to have a slight frequency differential. like 433.000Mhz and 433.125Mhz

Can or not ?

lecturer give more simple solution

2 20pin uc, 1 pair of 4bit decoder/decoder, RF 433MHz receiver and transmitter module

1) input 8bit into uc and send the upper 4 bit first to the encoder
2) swap lower 4bit and send to encoder again
3) Save the first 4bit into into R0
4) Save the second 4bit into A and swap
5) Logical AND RO and A send to output <- full 8bit data transmission
the only problem is the transmission delay(the time decoder/encoder need to encode and decode) to the time the uc fully assemble and disassemble the 2 4bit into 8bit
can be adjusted by using higher frequency oscillator in the uc to faster assemble and disassemble 8bit data.. call delay in the uc so the decoder and encoder can fully transmit the 2 4bit data

there u have a RF transmitter and receiver module.. with 8 channel and 8bit data transmission capabilities.. Time to build my prototype after exam

save cost.. BUT now i need to find a 20pin programmer    i only have 40pin mia.. can fit 20pin to 40pin programmer ?

any1 have any idea wher i can get a 20ping programmer that work with MCS-51 code

exam finished.....
i dunno why they keep going toilet . 3hour , a same people can go in 3time . swt