AP COMP SCI A- Chapter 1 quest

how are spikes of electricity used in a computer to carry information?

how are spikes of electricity used in a computer to carry information?

the absence or presence of a spike represents 1 or 0.

true or false?

several logical circuits may be combined to implement a software program

false

how many different bytes can be directly addressed by a 32-bit address.

4 GB

en EKG signal is digitized at 200 samples per second and 256 levels of amplitude. approx how much memory is need to store 30 seconds worth of EKG data?

6 KB

true or false

one “meg” of RAM is approx one million bytes

true

true or false

peripheral devices include RAM

false

true or false

the CPU fetches program instructions from RAM

true

true or false

the CPU always executes CPU instructions sequentially, in the same sequence as they were written

false

the original IBM personal computer had 256 KB of RAM. about how many times more RAM does a modern comp with 2 GB of RAM have

8192

true or false

in general purpose personal computer, the operating system resides in ROM

false

true or false

when a program is running, it can read files located on the hard disk

true

true or false

when a program is running, it can change the contents of ROM

false

true or false

when a system “hangs” or crashes, the contents of ROM are lost

false

true or false

some programs can request data from the internet

true

gates, D/A converter, RAM

hardware properties

INternet browser, GUI

not hardware properties

how many different colors may be used in a digital image that uses 24 bits per pixel RGB color

over 16,000,000

what does smpt stand for

simple mail transfer protocol