Достаточно ли видеопамяти объемом 256 Кб для работы монитора в режиме 640*480 точек и палитрой в 16 цветов.

Решение: Палитра N = 16, следовательно, глубина цвета I = 4 бита (2^4=16).
Общее количество точек равно: 640 • 480 = 307200.
Информационный объем равен:
307200 • 4 бита = 1228800 бит = 153600 байт = 150 Кб
Ответ: видеопамяти достаточно, 150 Кб < 256 Кб

Т.к. используется 16 цветов, значит глубина цвета = 4 бита (2^4=16)
256 Кб = 2 097 152 бит
640*480 = 307 200 всего точек
Необходимое количество видеопамяти:
2 097 152 бит дано изначально
307 200 * 4 бита = 1 228 800 занимает экран
2097152/1228800=1,7 раза - получается, что дано в 1,7 раз больше, значит видеопамяти хватит

it   was   july   16,   2008   and   i   was   at   city   hall   to   do   something   thatwould change my life forever. i went to room 302 and got my workingcard.   i   thought   i   was   independent   and   ready   to   get   a   job.

first i filled in applications. i put in over 100 applications at restau-rants, clothing stores, and hotels. i kept looking for a job, and i decidedto   go   to   the   mall.   i   was   interested   in   getting   a   place   in   one   restaurantbecause my good school friend worked there, and he told me they neededpeople.   i   thought   it   might   turn   out   to   be   successful.

one   day,   when   i   came   home   and   turned   on   the   answering   machine,there was a message on it. it was a job! a lady from a supermarket calledme   for   an   interview   on   tuesday.   i   was   very   excited.   this   was   my   first  interview.   on   sunday   i   got   up   early,   my   mom   and   i   went   shopping   fora dress. i put on this dress on tuesday. the lady asked me a lot of questi-ons,   but   i   thought   over   the   answers   the   day   before.

i   didn’t   get   the   job,   but   i   found   out   that   you   can’t   get   a   job   easily.it’s   very   hard   work.

it   was   july   16,   2008   and   i   was   at   city   hall   to   do   something   that would change my life forever. i went to room 302 and got my workingcard.   i   thought   i   was   independent   and   ready   to   get   a   job.

first i filled in applications. i put in over 100 applications at restau-rants, clothing stores, and hotels. i kept looking for a job, and i decidedto   go   to   the   mall.   i   was   interested   in   getting   a   place   in   one   restaurantbecause my good school friend worked there, and he told me they neededpeople.   i   thought   it   might   turn   out   to   be   successful.

one   day,   when   i   came   home   and   turned   on   the   answering   machine,there was a message on it. it was a job! a lady from a supermarket calledme   for   an   interview   on   tuesday.   i   was   very   excited.   this   was   my   first  interview.   on   sunday   i   got   up   early,   my   mom   and   i   went   shopping   fora dress. i put on this dress on tuesday. the lady asked me a lot of questi-ons,   but   i   thought   over   the   answers   the   day   before.

i   didn’t   get   the   job,   but   i   found   out   that   you   can’t   get   a   job   easily.it’s   very   hard   work.