NECO Computer Studies Obj And Essay/Theory Solution Questions and Answer – JUNE/JULY 2018 Expo Runz.
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Individual database fields
i)Keep software up to date
ii)Beware of error messages
iii)Validate on both sides
iv)Avoid file uploads
firmware is a specific class of computer software that provides the low – level control for the device’s specific hardware .In Other Words Firmware is held in non -volatile memory devices such as ROM , EPROM , or flash memory.
Proprietary software is software that is owned by an individual or a company (usually the one that developed it). There are almost always major restrictions on its use, and its source code is almost always kept secret.
iii)USB thumb drive
i)Magnetic storage device Stores data in magnetic form.
Optical storage device stores data optically and use laser to read/write
ii)Magnetic storage device has high storage capacity
Optical storage device has less storage than hardisk
i)Protocol. Different protocols can affect the transfer rates by bottle necking the drive. For example, a solid state drive on IDE is a really bad idea because the maximum speed of IDE is just over 120 MB/s. Sometimes slower for the slave drive.
ii)Length of cable. A Cat 5e cable at over 50m (tested) will only transfer 100 MB/s. I’ve seen shorter cables that can reach 1 GB/s.
iii)Busy system. A system at full CPU load may not receive as fast as the device can send.
iv)Drive capacity. For flash storage devices (Solid state drives), the fuller they are, the slower they get.
v)Age. Solid state drives, CDs, and some other media get slower as the years pass. Or maybe just in comparison to that new hard drive you bought.
i)Memory Data Register (MDR)
Data Register- is a register used in microcomputers to temporarily store data being transmitted to or from a peripheral device.
ASCII- (American Standard Code for Information Interchange) is the most common format for text files in computers and on the Internet. In an ASCII file, each alphabetic, numeric, or special character is represented with a 7-bit binary number
BCD- (binary coded decimal) (BCD) is a type of binary representation for decimal values where each digit is represented by a fixed number of binary bits, usually between four and eight.
presentation package is a software package used to display information in the form of a slide show. It has three major functions: an editor that allows text to be inserted and formatted, a method for inserting and manipulating graphic images, and a slide-show system to display the content.
Design theme- is a preset package containing graphical appearance details. A Design theme usually comprises a set of shapes and colors for the graphical control elements, the window decoration and the window.
slide sorter- displays all the, slides in your presentation in horizontally .it also provide the, user with the ability to select several slide at one time