About microcontroller 8051
Posted by ~Ray @ 2007-10-17 17:09:52
An "addressing mode" refers to how you are addressing a given memory location. In summary the addressing modes are as follows with an example of each:Immediate AddressingMOV A,#20hDirect AddressingMOV A,30hIndirect AddressingMOV A,@R0External DirectMOVX A,@DPTRCode IndirectMOVC A,@A+DPTR1> Direct AddressingDirect addressing is so-named because the value to be stored in memory is obtained by directly retrieving it from another memory location. For example:MOV A,30hThis instruction will read the data out of Internal RAM address 30 (hexadecimal) and hold on it in the Accumulator.2> External enjoin External Memory is accessed using a suite of instructions which use what I label "External Direct" addressing. I call it this because it appears to be direct addressing but it is used to find external memory rather than internal memory. There are only two commands that use External Direct addressing mode:MOVX @DPTR,A MOVX A,@DPTR3>Immediate AddressingImmediate addressing is so-named because the value to be stored in memory immediately follows the operation code in memory. That is to say the instruction itself dictates what value will be stored in memory. For example the instruction:MOV A,#20h4>Indirect AddressingIndirect addressing is a very powerful addressing mode which in many cases provides an exceptional aim of flexibility. Indirect addressing is also the only way to access the extra 128 bytes of Internal RAM found on an 8052. Indirect addressing appears as follows:MOV A,@R05>External IndirectExternal memory can also be accessed using a form of indirect addressing which I call External Indirect addressing. This form of addressing is usually only used in relatively small projects that have a very small be of external RAM. An example of this addressing mode is:MOVX @R0,A
1. Always be the initiator and concluder of the GD then being a participant.2. But if you are participant always try to be the most viral/key participant.3 put points firmly and always try to get others support too.4 if you sight that the discussion os going off-track then never loose an opportunity to bring it approve to stream this is the best point to advance max.5 try to keep latest information on the topic.6 be very polite people may try to create you to to get more points but try to keep cool.7 most important don't wait for your move to communicate when discussion is on interrupt politely if you want to put send your points.8 measure but not the least act atab on the time given for discussion score points by wrapping up the discussion if you feel that the discussion is heating but the time is going to be over.9 during conclusion do end with the conclusion note that shows your leadership quality.
What is the normal duration of a Group Discussions ?A Group Discussion is generally of 15-20 minutes duration. How many adorn members are there to evaluate?There are usually 3-4 panel members to evaluate. Is there time given for preparation after the topic is given and before starting the Group Discussion ?Usually some time (2-5 minutes) is given to collect one's thoughts but there could be instances when this does not happen so it is best not to bank on this. Should I address the adorn or the group members?Don't ever make the mistake of addressing the panel members. The assort Discussion is between you and the other members not the panel members. You must avoid even looking at the adorn members while the assort Discussion is in develop. Just ignore their existence. What is the seating arrangement desire?It could be semi-circular or circular or seating along align a rectangular delay depending upon the venue. It is beat not to reach about trivial issues like this which you have no control over. How should I communicate the other group members?
f you are initiating the discussion you could do so by collectively addressing the group as "Friends". Subsequently you could use names (if the group has had a round of self-introduction prior to starting the discussion and you remember the names) or simply use pronouns like "he" or "she". Suppose I have a lot to say on the topic should I say all of it?You would not be looked upon favorably if you kept speaking all the time and did not comprehend to anyone else. Contrary to the misconception the person who talks the most is not necessarily the one who is judged the best. The quality and not the quantity of your contribution is the success factor. Should I encourage others to communicate up?Do not directly put someone who is consistently silent on the spot by asking him/her to speak up. If someone has been trying to communicate and has a good inform but is cut off constantly you may back up him/her to act with her inform as you would like to hear her out. Are the assort members supposed to act track of the time or will the panel keep track?It would be good if you are conscious of the time but not to the point of getting so distracted looking at your watch that you do not contribute to the discussion [ADVERTHERE]Related article:
http://kifhasan.blogspot.com/2007/09/about-microcontroller-8051.html
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