(4) Bye com. Sci. 1

This might be my last blog post for the academic year. 

Our last lesson in Com. Sci was about installing an OS. An operating system is a collection of software that manages computer hardware resources and provides common services for computer programs. The operating system is an essential component of the system software in a computer system.

During our last discussion, I felt nostalgic. I will really miss the super easy lessons. I bet i'll really miss this when we reach a higher level. I will miss the jokes we say to the class. Never gets old. Also, I'll really miss Sir. His humor and how he puts clues to test (haha). 

Well, time goes really fast. I can already smell summer and in less than three months, we'll be going to be ate's and kuya's already.

So I'm going to cherish my remaining time being a grade 7 and the "easy" lessons and tasks.

(4) Trouble, Trouble, Trouble

It was a regular Monday. We all entered the cold Computer Science lab. Then sir discussed about troubleshooting, what the beeps mean and what to check before punching you computer for malfunctioning.

After the discussion, we had an activity where we applied the things we learned in the discussion. We connected wires to the CPU. It was easy since each wire has a corresponding color on the CPU and some had labels.

After successfully fixed my computer, I sent a message to Sir in Moodle telling that I have done the activity.

#TomAndJenny Hahaha

Last na talaga 'to sir. Hahaha

(4) System

A computer system is the one that can take a set of inputs, process them and create a set of outputs using the hardware and the software.

There are 3 types of hardware. the input/ output devices, CPU and the memory. There are 2 types of softwares. The OS/ Operating System and the applications.

There are many types of computers. Each with different kind of system.

The digital computer operates on data, including magnitudes, letters, and symbols, that are expressed in binary form . For example, the computers we use today. The analog computer is a computer that represents data by measurable quantities, as voltages or, formerly, the rotation of gears,in order to solve a problem, rather than by expressing the data as numbers. An example is an analog wall clock. The hybrid computer is a combination of digital and analog computer just like in aircrafts.

(4) Interconnected

A computer network or data network is a telecommunications network that allows computers to exchange data. In computer networks, networked computing devices pass data to each other along data connections. The internet that we are using today is a large network of networks. 

Each device has an IP address. As we discussed during the second quarter, an Internet Protocol address (IP address) is a numerical label assigned to each device (e.g., computer, printer) participating in a computer network that uses the Internet Protocol for communication. An IP address serves two principal functions: host or network interface identification and location addressing.

Data travels back and forth in a network. It is transferred physically through a communication channel or medium such as copper wires, optical fibers, wireless channel and storage devices. They are represented as electromagnetic signals such as an electrical voltage, radio wave, microwave or infrared signal.Data is divided into small pieces called packets for easy transfer. 

Transferring data from a network to another network is called internet exchange. Internet can be faster through peering.

Source: wikipedia.com

(4) The Sarah Geronimo Song

Cycles are natural occurrences in the universe. History repeats in cycles. Inside a human are lots of cycles. In the ecosystem, there are cycles. Even computers have cycles.

The computer cycle is also called processor cycle or instruction cycle. It is the basic processes of the CPU or the central processing unit of a computer. It is consisted of three steps. These are: 1. Fetch 2. Decode and 3. execute. 

Each step is executed in a particular place.