LasT ToPiC

RCA

Abbreviation for Right Circumflex coronary Artery, one of the specialized blood vessels which directly supplies the heart with oxygen and nutrients.
The RCA is specifically responsible for supplying several large regions of the heart, including the bottom and back of the heart wall as well as the right ventricle.

rAzAkSaT

RazakSat, formerly known as MACSat, was originally scheduled to fly on the third Falcon 1, in 2006 or 2007. Its launch was delayed after several previous launches failed, but following the Falcon 1’s successful test flight last September, it is finally ready to fly.

Once the demonstration flight was completed, the RazakSat launch was scheduled for early 2009. However, just a few days before a scheduled launch attempt on 20 April, the launch was postponed due to excessive vibrations.

A mitigation system was installed in the payload adaptor, but in order to allow this to be installed, two CubeSats – which were originally scheduled to have been launched as secondary payloads – were removed. It is currently unclear if and when these spacecraft, named CubeSAT and InnoSAT, will be launched in the near future.

RazakSat was built by the Satrec Initiative and ATSB, using an SI-200 bus. It will be the first SI-200 to be launched, with the second, DubaiSat 1, currently scheduled to fly aboard a Dnepr on 25 July. It has a mass of 180 kilograms, and is expected to operate for at least three years.

Its primary mission is electro-optical Earth imaging, however it will also be used for technology demonstration and weather research. Its main instrument, the Medium-sized Aperture Camera (MAC), is designed to capture images with a resolution of 2.5 to 5 metres.

The Falcon 1 is 21 metres tall, with a diameter of 1.7 metres, and a mass of 27.67 tonnes. The first stage of the Falcon 1 is powered by a Merlin-1C engine, which will deliver 347 kilonewtons of thrust at liftoff. It will burn for about 169 seconds, propelling the rocket to an altitude of around 90 kilometres.

The first stage will then shut down, and a few seconds later it will separate by means of a pneumatic system. The first stage was designed to be recovered by parachute for reuse, however this is yet to be demonstrated. First stage recovery is not believed to be planned for today’s launch.

The second stage is propelled by a single Kestrel engine, delivering 31 kilonewtons of thrust. It will deploy RazakSAT into a circular orbit with an altitude of 685 kilometres, and nine degrees of inclination.

Bus Topology

Bus networks (not to be confused with the system bus of a computer) use a common backbone to connect all devices. A single cable, the backbone functions as a shared communication medium that devices attach or tap into with an interface connector. A device wanting to communicate with another device on the network sends a broadcast message onto the wire that all other devices see, but only the intended recipient actually accepts and processes the message.

Tree Topology

Tree topologies integrate multiple star topologies together onto a bus. In its simplest form, only hub devices connect directly to the tree bus, and each hub functions as the "root" of a tree of devices. This bus/star hybrid approach supports future expandability of the network much better than a bus (limited in the number of devices due to the broadcast traffic it generates) or a star (limited by the number of hub connection points) alone.

ChApTeR 4

Bab kali ini ialah tentang internet.Seperti yang diketahui terdapat banyak benda dalam internet.Ada yg elok punye n tk elok punye.Bergantung kepada kita mcm mn nk gn internet.Sekarang nie byk benda yg tk elok je berlaku mase gn internet.Contohnye mcm virus.VIRUS nie mcm kwn baik kite je mase or lps gn internet.So,kite kenalah jg pc or laptop kite dgn baik supaya tk kena dgn virus.Ada jg kebaikkan gn internet.Contohnye untuk cr bahan rujukan,dpt maklumat,dan senang untuk dpt isu-isu semasa.Untuk hiburan ada chat rooms,dan mcm-lg.Cara kite menggunakan internet adalah sgt penting dan bergantung kpd kite samaada nk gn untuk kebaikkan or sebaliknye.Internet dicipta bg menyenangkan tugasan kite dan bukanye menyusahkan org lain.

B 2 B
Business conducted between companies and individual consumers, rather than between two companies. An example of a B2B company is a firm that makes parts that are sold directly to an automobile manufacturer.
B 2 C
Business conducted between companies and individual consumers, rather than between two companies. A retailer like Wal-Mart is an example of a B to C company.
C 2 C
A type of business model that facilitates interaction between customers. Customer to customer businesses provide individuals with a place to converse, exchange and interact with other people. Many C2C businesses have online operations. Online auctions and classifieds such as Ebay and Craig's List are examples of very successful customer to customer business models. These sites don't look to directly sell goods to their members, instead the customers are exchanging with other customers.

WINDOWS DAN MAC OS

WINDOWS DAN MAC OS
Windows ialah sebuah sistem pengendalian yang dibangunkan dan dipasarkan oleh Microsoft. Sehingga kini, terdapat pelbagai versi Windows, antaranya Windows 95, Windows 98, Windows ME, Windows NT, Windows XP dan yang terbaru daripada Microsoft ialah Windows Vista yang dilancarkankan pada tahun 2007.

Mac OS, yang bererti Macintosh Operating System, atau Sistem Operasi Macintosh, adalah sistem operasi untuk komputer Apple Macintosh. Mac OS merupakan sistem operasi pertama yang menggunakan antaramuka pengguna grafik (GUI). Pasukan Macintosh termasuk Bill Atkinson, Jef Raskin dan Andy Hertzfeld.

SeJaRaH (bOrIngnyeeee)

Bagi student seperti saya yg tidak minat dgn bab sejarah memanglah memboringkan btl kls kali ini krn kit bljr ttng sj perkembangan teknologi komunikasi.Tp saya tetap dgr jg ape yg Cik.Azura cerita kat depan wlpn mengantuk.Kuliah dimulakan dgn era-era komunikasi yg ada 4 era.Iaitu era komunikasi penulisan,era percetakan,telekomunikasi,interaktif.Bg saye org dahulu lg hebat drpd sekarang krn mereka mampu mencipta pelbagai ciptaan tanpa ada teknologi yg begitu baik seperti skrg nie.Ciptaan skrg hanyalah sebagai tambahan kpd sesuatu penciptaan.Teknologi skrg canggih smpi hampir semua hal dpt siap dlm penggunaan teknologi.Contohnya,semua pljr mempunyai learningcare untuk memperolehi nota2 kuliah dr lecturer diaorng dgn senang je.Student tk payah susah2 nk dpt nota dr lecturer.Ini br satu cnth.Ada lg byk cnth,tp scr amnya inilah kesimpulannya.skrg nie semua org hrs pandai menggunakan teknologi,klu tk th nti jd buta it je.Saye dl tk th pun psl blog2 nie smua n tk minat langsung.Tp skrg suka sgt masuk blog n dah pandai sikit dlm hal blog2.So,I harap kwn2 yg lain jg akn menggunakan teknologi dgn sebaik yg mungkin.Kls kali nie abis awal sgt sebab masing2 sibuk tunjuk jurnal.kkkk..

BAB 1: Pengenalan kpd sistem komunikasi



Kelas kedua tech kom di mulakan dgn topic yg bertajuk pengenalan sistem komunikasi.Dlm bab nie kami mempelajari tentang definisi komunikasi,teknologi dan teknologi komunikasi.Terdpt beberapa definisi yg diterangkan dlm bab nie.Selain tue cik.Azurah jg menerangkan beberapa model komunikasi yg terlibat dlm sistem komunikasi.Antaranya ialah,Lasswell Model(1948),Shannon&Weaver(1949) dan juga Berlo(1960).Seperti yg diketahui asas model terdiri daripada :


SENDER → MESSAGE → CHANNEL → RECEIVER

(Lasswell Model)


Seterusnye kami jg bincang ttng Lelebihan dan kelemahan media cetak serta media digital.Di akhir sesi kuliah kami diarah untuk mecr kumpulan bg menyiapkan tugan-tugasan yg diberikan..Berikut ialah aksi-aksi rakan sekelas kitaorg….