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48 Cards in this Set

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what is mobile computing
portable electronic tools such as cell phones, PDAS and lap tops, that allow us to comminicate with others, remain productive, and access a wide arrary of information no matter where we are.
what are the advantages and disadvantages of mobile computing?
advantages: cell phone, check e-mail; fulfil need to communicate no matter where you are, constant access to the internet through a wireless network, more convient and productive
Disadvantages: batter life limits usefulness of mobile devices, screen dispaly area is small on most devices, low speed of internet connection avaliable to mobile devices is currently low, extra cost.
name the mobile computing devices?
paging devices
cellular phones
mp3 players
personal digital assistants
table pcs
laptop computers
explain the mobile computing devices and their approx. price range
paging devices-limitied communication capabilitys. $35 + $10/month for service
cell phone: provides voice and e-mail connectivity. $50, +$30/month for plan +$10/month for internet
MP3: provides sorage of digtial music files $70+
PDA: provides PIM capabilities, access to application softwear, access to internet $100+
tablet PC: PIM, access to application softwear, access to internt, handwriting and speech recognition $1,700+
laptop: desktop computers capabilites, portable $900
how do cell phones work
sound enters the microphone as a sound wave, an analog to digital converter chips coverts your voices sound waves into digital signals, digital signal processor compresses the digital data, which is then transmitted as a radio wave though celluar network to the desitnation phone.
incoming calls--the digital sound processers decompress the incoming message. an amplifier boosts the signal to make it loud enough and it is passed to the speaker.
why is a cell phone considered a computer?
they have the same components as a computer; a processor, memory, input/output devices. it requires softwear and has its own operating system. They can handle e-amil, picutres , and even video
what is text messaging
a technology that allows you to send short text messages over mobile networks
how do you get internet service for your cell phone?
have a wirelss internet service provider. cell phones have micro browser softwear. runs at a slower pace, costs extra money each month
what is mp3 format?
what is mp3 player
a small portable device that enables you to carry your mp3 files around with you.
format is the way music is stored in digital form.
name some mp3 players and the number of songs each can hold
creative labs nomad muvo- 30 songs
verge DFP200- 60 songs
apple ipod-about 5,000-10,000 songs
apple ipod mini-1,000 songs
archos multimedia entertainment center- a bout 5,000 songs
is it illegal to download mp3 files
not infringing on copyright by downloading songs from legal mp3 sites

SHARED USING P2P ????
what is a pda? what are the main operating systems that are available in the market for pdas
personal digital assistant, a small device that allows you to carry digital information.
two main operating systems are Palm OS from Palm and pocket PC system from microsoft
what is a flash memory card?
which portable devices use these memory cards?
is used for more storage space, a removable card that can be inserted into a specialized slot on the PDA. used in digital cameras, mp3 players
what is a tablet pc?
why would you want to us?e it?
a portable computer that includes two special technologies: advanced handwriting recognition and speech recognition.
what are laptop computers? compar them with desktop pcs
most powerful mobile computing solution. have large dispalys and all of the computing power of a full desktop computer.
both are equipt with DVD/CD-RW drives, large hard drives. laptops dont last as long. laptops are smaller and lighter, each part of laptop is more expensive
what is mobile computing
portable electronic tools such as cell phones, PDAS and lap tops, that allow us to comminicate with others, remain productive, and access a wide arrary of information no matter where we are.
what are the advantages and disadvantages of mobile computing?
advantages: cell phone, check e-mail; fulfil need to communicate no matter where you are, constant access to the internet through a wireless network, more convient and productive
Disadvantages: batter life limits usefulness of mobile devices, screen dispaly area is small on most devices, low speed of internet connection avaliable to mobile devices is currently low, extra cost.
name the mobile computing devices?
paging devices
cellular phones
mp3 players
personal digital assistants
table pcs
laptop computers
explain the mobile computing devices and their approx. price range
paging devices-limitied communication capabilitys. $35 + $10/month for service
cell phone: provides voice and e-mail connectivity. $50, +$30/month for plan +$10/month for internet
MP3: provides sorage of digtial music files $70+
PDA: provides PIM capabilities, access to application softwear, access to internet $100+
tablet PC: PIM, access to application softwear, access to internt, handwriting and speech recognition $1,700+
laptop: desktop computers capabilites, portable $900
how do cell phones work
sound enters the microphone as a sound wave, an analog to digital converter chips coverts your voices sound waves into digital signals, digital signal processor compresses the digital data, which is then transmitted as a radio wave though celluar network to the desitnation phone.
incoming calls--the digital sound processers decompress the incoming message. an amplifier boosts the signal to make it loud enough and it is passed to the speaker.
why is a cell phone considered a computer?
they have the same components as a computer; a processor, memory, input/output devices. it requires softwear and has its own operating system. They can handle e-amil, picutres , and even video
what is text messaging
a technology that allows you to send short text messages over mobile networks
how do you get internet service for your cell phone?
have a wirelss internet service provider. cell phones have micro browser softwear. runs at a slower pace, costs extra money each month
what is mp3 format?
what is mp3 player
a small portable device that enables you to carry your mp3 files around with you.
format is the way music is stored in digital form.
name some mp3 players and the number of songs each can hold
creative labs nomad muvo- 30 songs
verge DFP200- 60 songs
apple ipod-about 5,000-10,000 songs
apple ipod mini-1,000 songs
archos multimedia entertainment center- a bout 5,000 songs
is it illegal to download mp3 files?
no, you are not infringing on a copyright by downloading songs from legal mp3 sites.
WHAT ARE FILE SHARING THROUGH P2P NETWORKS?
what is a PDA? name the main operating systmes that are available in the marker for PDAs.
personal digital assistant, a small device that allows you to coarry digital information.
the two main OS today are the palm os by palm and pockert pc system from microsoft.
what is a flash memory card? which portable devices use these memory cards?
is used for more storage space, it is a removable card that can be inserted into specialized slots on the PDA.
digital cameras and mp3 players.
what is a tablet pc? why would you want to use it?
is a portable computer that includes two special technologies: advanced handwriting recognition and speech recognition. you would want to use it becuase it is extremely light making transportation eaiser, full desktop porcessing power ideal for classrooms and confrences.
what are laptop computers? compare them with a desktop PC.
lap is the most powerful moblie computing solution. they have large displays and all of the computer power of a full desktop system.
both can be equipped with DVD/CD-RW drives, large hard drives. laptops dont last as long, are smaller and lighter, their individual parts are more expensive, more prone to damage
what is a network? what are the devices that are connected to a network called?
two or more computers that are connected together via softwear and hardware so they can communicate. devices that are connected to a network are called nodes.
what are the benefits of a network
allow users to share peripherals
ability to transfer files from one computer to another without using external storage media
shared directories, sharing internet connection
what is network architecture? name the two main ways a network can be controlled?
is the design of a network. networks can be controlled locally or centrally
locally controlled --peer to peer
centrally controlled-- client-server
explain in breif the difference between a client/server network and peer to peer network
peer to peer networks cost less so they are more often used in the home. peer to peer networks each node connected to the network can communicate with every other node on the netork insted of having a seperate device to have control over the network.
client/server networks generally comprise of 10 or more nodes, contains 2 different types of computers cliens and servers. the client is the computer which accomplishes the task, the server provides information/resources to the clinet and acts as a central control for functions of the network.
what are the main components of every network?
transmission media, network adaptors, netowkr navigation devices, and networking softwear
what are the types of peer to peer network? what is the major difference in thses networks?
powerline networks, phoneline networks, ethernet networks, and wireless networks.
the major difference in these networks are the transmission media by which the nodes are connected
what is a device driver?
softwear you instal on your computer; when you attach new devices to your computer the device driver allows your OS to interact with the device.
who is a cyber-criminal
individuals who use computers, networks, and the Internet to perpetrate crime
what is a hacker? who many catagories of hackers exist, name them?
anyone who breaks into a computer system unlawfully. there are 2 types of hackers, black hat hackers and white hat hackers (what about script kiddies)
what harm do the hackers cause to your computer?
if you preform financial transactions oinline, they may be able to gain access to your financial information while your online. could use a trojan horse to perpetrate widespread computer attacks (installation of backdoor programs), denial of service attacks
what is a firewall? how does it keep your computer safe from harm?
softwear programs or hardwear devices designed to keep computers safe from hackers. firewalls allow you to close off open logical ports to invadors and potentially make your computer invisable to ther computers on the internet
what is a computer virus? what do they do?
a computer program that attaches itself to another computer program and attemps to spread itself to other computers when files are exchanged. a viruses main purposes is to repliciate itself, it slows down networks. annoying messages, destroy files and hard dives.
name various categorys of viruses?
bootsector birus, logic bombs, worms, script and macroviruses, trojan horses.
((polymorphic, mulipartie, steath virus))
how will you protect your computer from viruses?
instal and run antivirus softwear thats up to date.
CNS (Central Nervous System)
The brain and spinal cord.

Three divisions in the brain: forebrain, midbrain and hindbrain.

Localization: idea that there are specific parts of the brain for specific components of behavior.
Forebrain
CEREBRAL CORTEX: The top portion of the brain, divided into two halves called the CEREBRAL HEMISPHERE

CORPUS CALLOSUM: the bundle of nerves that connect the two hemispheres of the brain, without these the two hemispheres wouldnt be able to communicate

The cerebral cortex is divided up into four lobes, the frontal, parietal, temporal and occipital lobes.

Limbic system: located on the underside of the cerebral cortex, involved in memory, emotional behavior, and mating or reproduction.

Basal Ganglia: The subdivision in control of movement

Thalamus: The "neural switchboard". A relay station for the different parts of the brain.

Hypothalamus: control of the endocrine system, and works with the limbic system to control behavior such as agression, eating, protection and mating (Four F's - fighting, fleeing, feeding and fucking)
FOUR MAJOR DIVISIONS OF THE CEREBRAL CORTEX: FRONTAL, OCCIPITAL, PARIETAL AND TEMPORAL LOBES.
Frontal Lobe: planning, organizing, coordinating and controlling movements, reasoning, and overall monitoring of the thinking process.

Parietal lobe: sensation

Temporal lobe: hearing, speaking, and other verbal activity.

Occipital lobe: vision
MIDBRAIN AND HINDBRAIN
Tectum: auditory and visual systems

Tegmentum: sleep, arousal, attention, muscle tone and reflexes.

Cerebellum: motor movement and coordination

Medulla: vital functions of the body such as cardiovascular system, breathing, and movement of the skeletal muscles.