Welcome to our Grade 9 Cambridge ICT lesson on Instructions for Running in the CPU!
In this video, we break down how instructions are processed and executed inside the Central Processing Unit (CPU) in a simple, student-friendly way.
🎓 What you’ll learn:
What is the CPU and what does it do?
The role of the Control Unit, ALU, and Registers
Fetch-Decode-Execute Cycle explained
Step-by-step breakdown of how instructions run inside the computer
✅ Perfect for students following the Cambridge ICT curriculum
✅ Clear visuals and easy-to-understand explanation
✅ Useful for homework, revision, and exam preparation
📌 Don’t forget to like, comment, and subscribe for more ICT learning videos!
#CambridgeICT #Grade9ICT #CPURunningInstructions #ICTExplained #FetchDecodeExecute #ComputerScienceBasics
okay with this good morning yeah good morning we will sharing in the last yeah I think you already did this slow yesterday yes did you remember yeah we discussed this on this yes okay we will move forward from that one the new lesson with the instruction set okay salo yes we will move with the instruction set today okay it’s fine yeah we will go for that one okay write down today part that’s related instruction set okay right write the instruction set instruction set okay so in a computer system very important that instruction are set of operations which are decoded in a sequence okay instruction are actually set of operation which are what decoded in a sequence so which operation will instruct al and cu that means an operation made up an what we calling up code other one operands there are two things each and every operation each and every operation they are having two part one part is what this up code one part is of code the other part is operate okay there are having two part two things the one part is op code that inform the CPU that operation need to done the other part is operand operands is the data which lead to be act as the what that mainly refer to what register with the memory okay they are having two parts like that that’s very important again I will tell again I tell there are two parts in the computer system instruction are set of what operation which are decoded in sequence okay so so each operation will instructor al CU okay so which are the part of the CPU okay so they are having oper operation made up with the up code and the what up code and operate there are two things that calling up code and operants okay the up code it’s inform the CPU what operation need to done and operance is data which need to be what access and the refer to the register with the memory i will inform that one I will what define these things very clearly so computer system they are having two things they are instructional set of operation which are decoded in the sequence okay they are having a sequence it’s decoded with the what operation so each operation will be instructed al and cu all the things in the CPU they are having arithmetical and logical unit and C control unit in the CPU that are all instructed that one so operation is made up with the up code and the operants okay that are the main thing so it can be running up with this thing okay can you write down this these two also please write okay please write it here okay write it okay okay so in a computer system uh actually instruction are the set of operation instruction are the set of operation which are decoded in the sequence so instruction are the set of operation which are decoded in the system so they are having main type of operations they are having main type of operation that call in what instruction which recorded in sequence each operations are instructed the arithmetical logical unit and the control unit so operation is made up in the op code and operants okay that are the things okay please can you write down this thing these two also okay please write yes write it i give 2 3 minutes of time okay write it done with it okay you can write low yes they are having to mainly but you should be following up yes instruction that oper okay that are two parts you should be know you should be know about that two component mainly what are they they are having up code and the operant there okay that is this so since the computer need to understand the operation to be carried out that two managed by the arithmetical and logical unit and the control unit both are in the what both R should be placed in the arithmetical and logical unit that CU both are placed in the should be placed in where both should be placed in CPU so since computer need to understand operation that they carried out there are actually limited number of up code that can be used so this is known as instruction set so computer need to understand this operation operation is divided into two part for easily understanding of code and operand so since the computer need to understand operation to carry it out there is actually limited number of op code can be used this is known as instruction set this one is known as what instruction set so all the software running in the computer will be contained set of instruction so all the software actually should be running with the completely with the instruction that calling what the fetch decode execute the cycle is sequence that is step used by the CPU that process each instruction in the sequence each of the instruction should be running as the sequence it should be what this is very important it should be running as the sequence sequence with one after one okay i just write these things because this is very important so all software running in the computer will contain a set of instruction that calling what me to converted into binary it should be converted that instruction should be cannot understand with the English language it should be converted binary so that bot execute cycle is sequence to a stop but by s process is in instruction in the sequence it should be running as a sequence one after one clear it should be running as a sequence okay one after one okay can you write down this part okay write it down for the please i did you can write like that that se it should be sequence that means one after one okay so you should be know that one so one example of the instruction set in the what 32-bit is 86 is common CPU used many modern computer okay instruction set they are having they are having you can see they are having with the Windows 861 they are having what instruction set common one that one after one okay so many computer so although different computer manufacturers will adopt their own internal electronic design okay they are adapting with their own internal electronic design if the computer base on the what plus 86 APO they are designed with their share almost identical instruction there they are having what identical instruction set it is unique one for any model there can be following of unique instruction sets for example internal phentium and AMD atlant CP use almost identical what class 86 even though they are based on very different electronic desert they can be have many different electrical designide but however that Pentium and AMD Oland CPI use all identical but 86 instruction set even though they are based on the very different electrical design however if there are having very different design I use what same method the same even their electric design okay so that’s the thing so one example of in set with the plus 86 is a common CPU okay it’s common okay can you write that problem that analy part is however it should be going with what sals once after one okay however it should be going with instruction should be running one after one okay however it should be running one after one it should be a binary otherwise the machine computer can’t understand that code okay machine language machine can be understand only the binary code zero and ones only they can’t understand normal language clear so we should be following up that one that’s why they are following in instruction with zero and ones clear that’s why they are following instructions zero and once okay right under this write it under the line so not in caution so do not confuse okay please do not confuse instruction set with the programming code programming code and the instruction set are different programming code and instruction set are different it’s not the same so instruction set low-level language instruction that instructor CPU how to carry out the operation instruction set is what that lowle what language low-level language mean it should be following up with the machine language zero and ones okay instruction set are the low-level language instructor that instruct the CPU how to carry out an operation there are mention how to carried out the operation how should be carried out the operation so program code needs interprets what interpreters or compiler to convert the code onto instruction understood the computer that means how to carry that operation that program code need to what interface or compilers to convert code into what instruction set to understood by the computer so some example of the instruction set operate include what ad JMP LGO7 okay so keep in mind they are having two differences between instruction set and the operator keep in mind okay they are having two differences between instruction set and the operation keep in mind okay they are having two differences okay I just telling I think you all that’s the difference and that are the things you have to following up okay you should below should be low that thing okay that there are anything with the AMD or something it should be going with what it should be going with instruction through the key points okay it should be going with the instruction the keywords okay okay you can write it okay yes the next thing we have to tell about embedded systems okay embedded system is a combination of the hardware and software which is designed to carry out a specific set of functions to carry out a specific set of function we call it embedded systems to carry out okay we will write that one on the next day okay we will discuss what are the embed system that connected with the hardware and software okay we will discuss that one on the next day so I think you got the idea how to running a instruction with the computer system okay how to run instruction with the computer system okay we will discuss other things on the next day so I’ll wind out the session for today so we will discuss other thing on later on tomorrow okay so I’ll wind out see you all tomorrow okay okay yes see you tomorrow bye okay goodbye see you