The Journal Entry is same as normal. It is irrelevant to
know whether the TV is installed or not. Once the computer
is purchased you can do the entry for all 10 TV. 

Dr. TV A/c (F.A A/c)
Cr. Cash or Vendor

purchases a/c Dr.
  
  To cash a/c

Purches A/c     Dr     10000
To cash A/c      9000    
Add preinstalled 1000         1000
                 .....  
(Being 10tvs purchsed@1000, from which 1 was yet)

Purches A/c     Dr     10000
To vendor    9000
Add instaled 1000               10000    
                 .....  
(Being 10tvs purchsed@1000, from which 1 was instaled )

According to Irfan ot of the 10TVs purchased for business 
one is installed in the shop for display. If so the entry 
will be 
Purchase of Tvs      Dr    9000
TV                   Dr    1000
To Cash/Bank                      10000
Here it means one Tvs was taken under assets account and 
others were taken as purchases

TV A/c Dr  10000
to capital a/c  10000

Dear Mithun what made u to  bring capital into account. It 
is a purchase made for trading. out of which one is taken 
for Display in the shop. So it is to be taken as asset. 
dont be hasty in making transactions. Think twice or thrice 
before you answer.www.therealaccountants.com

purchases a/c    Dr     9000
tv a/c           Dr     1000
      to cash                   10000

TV A/c.......dr.      1000
Purchase A/c......dr. 9000
    To capital              10000

Dear Mr.Khanirfan,

it is clearely mentioned for business use means

Computer has been used for office/business use only.
it means no Drawings.

The entry will be same as above

Purchase A/c Dr 10,000.00

Cash/Bank/Party Name Cr    10,000.00

( Being 10 CTv purchased @1,000.00 for which 1 is installed)


Regards,

Khan

it is clearly mentione that one is installed so it becomes
as capital expenditure its non-recurring in nature so the
treatment will be as follows
T.v a/c.........dr
    To cash/bank a/c
As the other 9 are using for business,we should consider
them as purchases 
purchases a/c..........dr
   To cash/bank a/c

Dear Mr.Satyaki Raju 

Sir, can you please tell us what will be the journal entry 
for above doubts, i wait for your response 

Thanks & regards,

Khan