Usamah Patel
AO1
Hardware
Hardware is all the physical parts of a computer. These are the parts you can see and touch. A computer system consists of inputs, outputs, processing and storage.
Types of hardware
The following are the main types of hardware:
Input
Something that goes into the production of output
Process
In computing, a process is an instance of a computer program that is being executed878798 a result
Storage
A storage device may hold information, process information, or both
Output
End product: final product; the things produced
I used the following hardware during this task:
Input
Microsoft QWERTY Keyboard
Microsoft Optical Mouse
Scanner
Process
Intel Core Duo Processor
Storage
120GB SATA Hardrive
1GB RAM
4GB transcend USB
Output
DAEWOO 17” Monitor (CRT) Printer
The following table shows how a device works and also the advantages and disadvantages of the device:
Alternatives
Instead of the hardware I used, I could have used these
Software
Software is the written programmes and associated documents pertaining to the operation of a computer system. This is stored in the read/write memory.
There are two main types of software:
1 .Operating Software (O.S)
An Operating System is a software program or set of programs that mediate access between physical devices (such as a keyboard, mouse, monitor, disk drive or network connection) and application programs (such as a word processor, World-Wide Web browser or electronic mail client).
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Alternatives
Instead of the hardware I used, I could have used these
Software
Software is the written programmes and associated documents pertaining to the operation of a computer system. This is stored in the read/write memory.
There are two main types of software:
1 .Operating Software (O.S)
An Operating System is a software program or set of programs that mediate access between physical devices (such as a keyboard, mouse, monitor, disk drive or network connection) and application programs (such as a word processor, World-Wide Web browser or electronic mail client).
2 .Application Software
Application software, also known as software application, application or app, is computer software designed to help the user to perform a singular or multiple related specific tasks. Typical examples are word processors, spreadsheets, media players and database applications.
There are two main types of operating software (O.S):
- GUI- Graphical User Interface
- CLI - Command Line Interface
The operating software that I am using is GUI (Graphical User Interface) because it is very easy to use.
If I would be using an older version such as Windows 98, everything would be much slower and it would crash frequently, but because I am using Windows 7, internet and the different applications such as Microsoft Word (2010) are much faster.
If I used CLI (Command Line Interface) then it would require the user to know the exact commands needed to use it and to have some experience of using computers. It would be difficult to use it because I don’t have any experience in using it. This is also very time consuming.
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Application Software
- Word (Microsoft)
- Access (Microsoft)
- Paint
- Internet Explorer
This table shows the application that I am going to use, also there advantages and disadvantages.
Alternatives
This table explains the alternative applications I could have used.
Microsoft Word
Microsoft Access
Internet Explorer
Paint
Input
The input devices that I am going to use are keyboard, mouse and scanner because these help me to create a database.
Keyboard
To detect errors in my work I used spelling and grammar checker, which showed me the errors that I had made in my work. I also proof read the work to make sure there were no errors.
To correct errors in my work I used spelling and grammar checker which gave me suggestions for my errors. I corrected some errors manually by reading through the work and then correcting the errors and I also right-clicked on the mistake and chose from the matching/possible spellings.
To prevent errors from happening in my work I checked and read everything whilst typing to make sure no errors were being made. To prevent any errors in typing I used the validation technique to ensure that the data entered was valid. I also used drop down boxes to limit the search to make it easier to find the data.
Mouse
To detect errors in my work I checked that there were no extra/unwanted lines or marking made and that no other program or tool was clicked besides the one that I wanted. I corrected the errors in my work by using the eraser to erase unwanted lines or markings and I closed the program that had opened accidentally and opened the one that I needed for my work. To prevent errors from happening in my work I drew everything carefully and slowly and did the drawing step by step to make sure no unwanted markings/lines were made. I also clicked items carefully to make sure that no other programs or tools were opened or clicked. I also used specific buttons to automatically draw a proper line or to direct me exactly to the location I wanted to reach.
Scanner
To detect errors in my work I used spelling and grammar checker and proof read the work to make sure there were no errors. I also checked that the scanned image/text was exactly the same way around as the original piece. To correct errors in my work I used spelling and grammar checker to correct the mistakes and rotated the image/text back to its original form if it had been scanned upside down. To prevent errors from happening in my work I made sure that the paper was put the right way around on the scanner glass and the cover was closed properly to prevent smudging of letters.
Effects of Inaccurate Data
The overall best way is to use the technique of validation and verification and also double check your data.
Validation
When someone is entering data into something it is very vital for you to enter it correctly. This is why validation comes in. The actual meaning of validation is to make sure the data is allowable like when you get a database and when it says enter gender and if you enter something besides “male” or “female” then it does not allow you this what validation it. I need validation for my database because when someone uses it then there is less chance that someone will make an error this is why I going to use validation.
Verification
(It was mentioned earlier that validation cannot make sure data that you enter is correct, it can only check that it is sensible, reasonable and allowable. However, it is important that the data in your database is as accurate as possible. Verification can be used to help make sure that the data in your database contains as few mistakes as possible.) This is from Teach me ICT. Com by this you can see that when verification is the like the second step of validation that make sure that you most likely not to get a mistake and lowers the chance to get a mistake.
Output
This table is about the output I am going to use and their advantages and disadvantages.
After I had been looking at the output devices my work hasn’t actually been affected that much but I have used the best output devices that I can and the devices I was used very good and I can now do my work easily.
Conclusion
The system that I used was the right one for this task because I was able to do my work quickly, and efficiently, and I think the company would need one more hardware, which is a headphone for every employee so when they talk to the customers it would be more easier to talk and type.
Also, all the hardware I used was the right one as it made me finish my task on time, and it was the right, or quicker time to finish on.. Also I do not think I will need anymore other hard wares because I used the most appropriate hard ware that I can.
Choosing and Describing Applications =3
Describing using Hardware =3
Describing using Software = 3
Characteristics, Benefits, and drawback of each system = 6
Demonstrate use of Input Methods = 1
Comment on their speed, accuracy and validation = 4
Describe your system outputs = 1
Comparing Output devices Alternative outputs and drawbacks to your system= 4
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