Display Memory

Lecture 16: Display Memory

216 Questions192 MCQs19 Short Questions5 Long Questions

Showing 211 – 216 of 216 Questions

Page 22 of 22

Q211❓ MCQ📑 Lec 6Easy🔁Repeated⭐High-Yield💡Conceptual

In the 8-bit text-mode character attribute byte, which bit controls the Green component of the foreground color?

A.Bit 1
B.Bit 5
C.Bit 3
D.Bit 7

Q212❓ MCQ📑 Lec 6Easy🔁Repeated⭐High-Yield💡Conceptual

In 80x25 text-mode Video RAM, which formula calculates the memory offset for a character cell at row position 'y' and column position 'x'?

A.location = (y_pos * 80 + x_pos) * 3
B.location = (y_pos * 80 + x_pos) * 2
C.location = (y_pos * 25 + x_pos) * 2
D.location = (y_pos * 80 + x_pos) / 2

Q213❓ MCQ📑 Lec 6Easy🔁Repeated⭐High-Yield💡Conceptual

In the assembly instruction 'MOV WORD [ES:160], 0x1230' written to Video RAM in text mode, what character is represented by the lower byte value 0x30?

💻 assembly Snippet

mov word [es:160], 0x1230

Q214❓ MCQ📑 Lec 6Medium🔁Repeated⭐High-Yield💡Conceptual

In 80x25 text mode, at which screen location will the instruction 'MOV WORD [ES:160], 0x1230' render a character?

💻 assembly Snippet

mov word [es:160], 0x1230

A.First column of second row
B.Second column of first row
C.Second column of second row
D.First column of third row

Q215📝 Short Q📑 Lec 6Easy⭐High-Yield💡Conceptual

What is ASCII (American Standard Code for Information Interchange), and why is character encoding essential in computer systems?

💻 assembly Snippet

; Displaying ASCII character 'A' (ASCII 65 / 0x41) in Assembly
mov al, 'A'       ; Load ASCII value 0x41 into AL
mov ah, 0x07      ; Load light gray text attribute into AH
mov [es:0], ax    ; Print 'A' at top-left of video memory

Q216📝 Short Q📑 Lec 6Easy⭐High-Yield💡Conceptual

What is plain ASCII text format, and why is it widely used for system software and data exchange?

Display Memory

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