Bilimlar bellashuvi 8 sinf I variant ehm ning birinchi avlodlarida asosiy element nimadan iborat?

6. 1000₂ + 11₈ · 11₁₆ ifodaning ikkilik sanoq sistemasidagi qiymati … ga teng.

A)

10111110

B)

10100001

C)

10001100

D)

11000010

7. 6321₈ va AA7₁₆ sonlar ayirmasini hisoblang. Natijani ikkilik sanoq sistemasida tasvirlang.

A) 1000111010 B) 1000101110 C) 1000101010 D) 1000101000

8. Biror tashuvchida fayllarni saqlashni tashkil etish vositasi – bu ….

A) yo‘l boshlovchi B) fayl sistemasi C) antivirus D) formatlash
9. MS Excel. A1=–3, B1=7, B2=2 bo‘lsin. Quyidagi formula natijasi –15 bo‘lishi uchun A2 katakka kiritish zarur bo‘lgan qiymatni aniqlang:

=ЕСЛИ(ИЛИ(A1+B2>=A2*B1;A1*B1>0);A1*B2–B1–A2;A1*B1+B2+A2)

A) 1 B) 6 C) 4 D) 2

10. Qaysi dastur biror tashuvchida fayllarni saqlash uchun xizmat qiladi?

A) arxivatorlar B) fayl sistemasi drayveri C) Windows-ilovalar D) A va C

11. Qaysi Y soniuchun (Y>1)  (Y>4)  (Y<2) mulohaza yolg‘on?

A) 1 B) 2 C) 3 D) 4

12. Amalni bajaring: D035₁₄ – BCD₁₄.

A) DA46₁₄ B) C246₁₄ C) 1D46₁₄ D) 12246₁₄

13. MS Excel. Quyidagi formula natijasini aniqlang: =ЦЕЛОЕ(2,985)+ДЛСТР(15,303).

A) 8 B) 7 C) 9 D) 6

14. 1 megabayt necha kilobaytga teng?

A) 1000 kilobayt B) 1004800 kilobayt C) 1024 kilobayt D) 1048576 kilobayt

15. Ifodaning qiymatini hisoblang 110101110₂:1010₂=?₂

A) 110011₂ B) 1010111₂ C) 101011₂ D) 101110₂

16. Agar disk hajmi 4,5 Mb bo‘lsa, u holda “Jannat onalar oyog’i ostidadur” iborani diskka necha marta yozish mumkin (qo’shtirnoqlar hisobga olinmasin)?

A) 157287 B) 1258291 C) 1258292 D) 157286

17. Qaysi fayl .arj kengaytma bilan yoziladi?

A) buzilgan fayl B) buyruq fayli C) arxiv fayl D) Pascal tilidagi fayl

18. MS Excel. A1=–7, A2=–1, B1=7, B2=5 bo‘lsin. Natijasi –8 bo‘ladigan formulani aniqlang.

A) =МИН(–A1–B2; A2–B1) B) =МАКС(ABS(A1) +B2; A2+B1)

C) =СТЕПЕНЬ(B2; A2+1) D) =СЧЕТЕСЛИ(A1:B2; "<7")

19. MS Word hujjatida “Uzun tire” ni yozish uchun … klavishlari birgalikda bosiladi.

A) Ctrl va yordamchi klavishlardan tire B) Alt va yordamchi klavishlardan tire

C) Ctrl, Shift va yordamchi klavishlardan tire D) Ctrl, Alt va yordamchi klavishlardan tire

20. Internetda Web – sahifalar qaerda saqlanadi?

A) Web –serverda B) Web-saytda C) WWW da D) Web – brauzerda

21.Ifodani qiymatini aniqlang va natijani 16-lik sanoq sistemasida tasvirlang: 1001011₍₂₎∙101₍₂₎+254₍₈₎. Javob:

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22. Elektron jadvaldaА3:В7 yacheykalar majmui belgilangan. Bu diapozonda nechta yacheyka bor? Javob:

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23. Ifodaning qiymatini hisoblang 5024₆-45₆*23₆=?₆ Javob:

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24.Manitor ekranidagi har bir piksel 256 xil rangga ega.Manitor ekrani imkoni m/bit.Manitor imkoniyatini toping. Javob: Javob:25.В12,СЕ₁₆sonini ikkilik sanoq sistemasiga o‘tkazing.

Javob:

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26.Fayl-bu___________________________________________________________

27. A=“111₂=7₁₀”, B=“1 Gb=1024 Kbit”, D=“10₁₆=1010₂” bo‘lganda A (BD) ifoda qiymatini hisoblang. Javob:

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28.O’nlik sanoq sistemasidagi 410³+910⁰+210^–2+310^–3+110^–4 sonni asos bo’yicha yoyilmasiga ko’ra o’zini yozing: Javob:

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29.Ifodaning qiymatini hisoblang 10010111111:101101=?₂ Javob:

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30.Manfiy bo’lmagan butun sonlar to’plami qaralmoqda. Shu to‘plamda 11 bit orqali kodlash mumkin bo‘lgan eng katta sonni aniqlang. Javob:

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