assume cs:code

datas segment
 data1 db 11h,22h,33h,44h
 data2 dw 11h,22h,3344h
 data3 dd 11h*2,22h,33445566h
 data4 db 'avcd',66h
 m1 db 10 dup(0)
 mem1 db 34h,'a',?
 dw 20 dup(?)
datas ends

code segment
start:
      mov ax,datas
      mov ds,ax
      mov ah,4ch
      int 21h
code ends
end start

assume cs:code

datas segment
 m1 db 'how are you?'
 m2 dw 3 dup(11h),3344h
    db 4 dup(?)
 m3 db 3 dup(22h,11h,?)
datas ends

code segment
start:
      mov ax,datas
      mov ds,ax
      mov ah,4ch
      int 21h
code ends
end start