1. Write short note;
(Total mark 4 X5=20)
a. Information System.: Information system (IS) is the study of complementary
networks of hardware and software (see information technology) that people and
organizations use to collect, filter, process, create, and distribute data.
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c. Microprocessor: . A microprocessor incorporates the functions of
a computer's central processing unit (CPU) on a single integrated circuit (IC),[1] or at
most a few integrated circuits.[2] It is a multipurpose, programmable device that
accepts digital data as input, processes it according to instructions stored in its
memory, and provides results as output..
d. Validation . :… In computer science, data validation is the process of ensuring that a
program operates on clean, correct and useful data. It uses routines, often called
"validation rules" or "check routines", that check for correctness, meaningfulness, and
security of data that are input to the system. The rules may be implemented through
the automated facilities of a data dictionary, or by the inclusion of explicitapplication
program validation logic...
e. Data : Data are the quantities, characters, or symbols on which operations are
performed by a computer, being stored and transmitted in the form of electrical
signals and recorded on magnetic, optical, or mechanical recording media.
f.
Name different types of computer. Explain:
i. A microcomputer is a small, relatively inexpensive computer with
amicroprocessor as its central processing unit (CPU).[2] It includes a
microprocessor, memory, and input/output (I/O) facilities.
ii. Mainframe computers are computersused primarily by corporate and
governmental organizations for critical applications, bulk data processing
such as census, industry and consumer statistics, enterprise resource
planning and transaction processing.
iii. A minicomputer, or colloquially mini, is a class of smaller computers that
evolved in the mid-1960s and sold for much less than mainframe and midsize computers from IBM and its direct competitors.
iv. A supercomputer is a computer at the frontline of contemporary processing
capacity--particularly speed of calculation. Supercomputers were introduced
in the 1960s
2. Advantage and disadvantage. Between deferent storages system ,mini hard,mini DVD,
flash memory card.
3.
Advantage and disadvantage
EPOS?
a. Point of sale (also called as POS or checkout) is the place where a retail
transaction is completed. It is the point at which a customer makes a payment to the
merchant in exchange for goods or services. At the point of sale the retailer would
calculate the amount owed by the customer and provide options for the customer to
make payment. The merchant will also normally issue a receipt for the transaction.
i. Counting is the simplest approach to checking your inventory on the
shelves in a small business and this is called stocktaking. For small
businesses, like a small toyshop, stocktaking is a thoroughly practical
approach. However, most of the time stock management is not that
simple, and sometimes the practical option is not the best option. There
can be discrepancies between the physical and the stock records,
especially when it concerns annual stock management. This is why it is
advisable for every business owner to use computerized POS systems in
stock management.
The best thing about having a computerized POS System in your retail
business is: as new stocks arrives and as it is sold, it keeps the stock
levels current and updated, hence making it is easier to identify which
items are selling and which items are not. A POS System is also good in
checking for any obsolete or out of date stock that needs to be disposed.
If you are still counting your inventory manually on the shelves or in the
warehouse, you should think twice about your method, for there are many
advantages in using a POS System. One advantage of a POS System is
its ability to help your business achieve detailed real-time stock level
information. In addition, a POS System can also give you information
such as weather forecasts, public holidays and major sporting events,
which can be of great help in determining the stock level of seasonal
products. You can now efficiently and effectively handle your stock
management accurately.
4. .
5.
(1) is Multitasking and (2) Multi-access.
a. The Pros of Multitasking
i. Multitasking actually has its benefits for certain tasks. Performing a
number of search engine optimization tasks simultaneously allows us to
finish more tasks within an 8-hour workday. The ability to switch between
different projects can also stimulate our creativity, keep us from being
bored, or even inspire us.
ii. In addition, multitasking teaches us to manage our vacant time
productively. For example, you can send an email to your boss while
waiting for your turn at the bank (that is, if you have access to your email
on your mobile device, while you’re out of the office).
b. The Disadvantages of Multitasking
i. While doing many things at once has its pros, these advantages come with
drawbacks. Doing multiple tasks simultaneously is reflective of
diminished focus. This usually results in the employee producing poor
work quality compared to someone who is assigned to do only one thing.
ii. Multitasking could also be a time waster since you’ll need to switch from
task to task, and may require constant reminder of what to do. This is
especially difficult for people working in web design and
developmentfirms. In most situations, little work is completed since the
individual who multitasks is constantly on the move towards the next item
on their list, resulting in low overall daily productivity.
c. Multi-access.They have many advantages in workplace such as enabling
employees to refer to and update a shared corporate database. The travel
industry uses a multi-user system to manage bookings of airline tickets; travel
agents around the world using the system can access information on available
seats as readily as an airline's own office
6.