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                              REVOLVING CREDIT NOTE

$8,000,000.00                                                     JUNE 29, 1999


         FOR VALUE RECEIVED, the undersigned, DAOU SYSTEMS, INC., DAOU--
SENTIENT, INC., DAOU--RHI, INC., DAOU--TMI, INC., and DAOU--SYNEXUS, INC., each
of which is a Delaware corporation (collectively "Borrower"), jointly and
severally, promise to pay, in lawful money of the United States, to the order of
HCFP FUNDING, INC., a Delaware corporation (together with its successors and
assigns, "Lender"), the principal sum of Eight Million and No/100 Dollars
($8,000,000.00), or so much of such principal sum as shall be advanced or
readvanced and shall remain unpaid under the Loan established pursuant to that
certain Loan and Security Agreement dated as of even date with this Note by and
between the undersigned and Lender (as amended, modified, restated or replaced
from time to time, the "Loan Agreement"), plus interest on the unpaid balance
thereof, computed on a 360-day basis, at the rate per annum that is set forth in
the Loan Agreement.

         1. All capitalized terms used and not otherwise specifically defined in
this Revolving Credit Note (as amended, modified, restated or replaced from time
to time, the "Note") shall have the meanings given to them in the Loan
Agreement.

         2. This Note shall evidence the undersigned's obligation to repay all
sums advanced by Lender from time to time under the Loan Agreement and as part
of the Loan. The actual amount due and owing from time to time under this Note
shall be evidenced by Lender's records of receipts and disbursements with
respect to the Loan, which shall be conclusive evidence of that amount, absent
manifest error.

         3. Interest due pursuant to this Note shall be payable monthly, in
arrears, on the first Business Day of each month after the date of this Note
(for the previous month). For purposes of this Note, a "Business Day" shall mean
any day on which banks are open for business in Maryland, excluding Saturdays
and Sundays.

         4. This Note shall become due and payable upon the earlier to occur of
(i) the expiration of the Term, or (ii) the occurrence of any Event of Default
under the Loan Agreement, or any other event under any other Loan Documents
which would result in this Note becoming due and payable. At such time, the
entire principal balance of this Note and all other fees, costs and expenses, if
any, shall be due and payable in full. Lender shall then have the option at any
time and from time to time to exercise all of the rights and remedies set forth
in this Note and in the other Loan Documents, as well as all rights and remedies
otherwise available to Lender at law or in equity, to collect the unpaid
indebtedness under this Note and the other Loan Documents. This Note is secured
by the Collateral, as defined in and described in the Loan Agreement.

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         5. Whenever any principal and/or interest and/or fee under this Note
shall not be paid when due, whether at the stated maturity or by acceleration,
interest on such unpaid amounts shall thereafter be payable at a rate per annum
equal to four (4) percentage points above the stated rate of interest on this
Note until such amounts shall be paid.

         6. The undersigned and Lender intend to conform strictly to the
applicable usury laws in effect from time to time during the term of the Loan.
Accordingly, if any transaction contemplated by the Loan Agreement or this Note
would be usurious under such laws, then notwithstanding any other provision
hereof: (i) the aggregate of all interest that is contracted for, charged, or
received under this Note or under any other Loan Document shall not exceed the
maximum amount of interest allowed by applicable law, and any excess shall be
promptly credited to the undersigned by Lender (or, to the extent that such
consideration shall have been paid, such excess shall be promptly refunded to
the undersigned by Lender); (ii) neither the undersigned nor any other Person
(as defined in the Loan Agreement) now or hereafter liable hereunder shall be
obligated to pay the amount of such interest to the extent that it is in excess
of the maximum interest permitted by applicable law; and (iii) the effective
rate of interest shall be reduced to the Highest Lawful Rate (as defined in the
Loan Agreement). All sums paid, or agreed to be paid, to Lender for the use,
forbearance, and detention of the debt of Borrower to Lender shall, to the
extent permitted by applicable law, be allocated throughout the full term of
this Note until payment is made in full so that the actual rate of interest does
not exceed the Highest Lawful Rate in effect at any particular time during the
full term thereof. If at any time the rate of interest under this Note exceeds
the Highest Lawful Rate, the rate of interest to accrue pursuant to this Note
shall be limited, notwithstanding anything to the contrary in this Note, to the
Highest Lawful Rate, but any subsequent reductions in the Base Rate shall not
reduce the interest to accrue pursuant to this Note below the Highest Lawful
Rate until the total amount of interest accrued equals the amount of interest
that would have accrued if a varying rate per annum equal to the interest rate
under the Note had at all times been in effect. If the total amount of interest
paid or accrued pursuant to this Note under the foregoing provisions is less
than the total amount of interest that would have accrued if a varying rate per
annum equal to the interest rate under this Note had been in effect, then the
undersigned agrees to pay to Lender an amount equal to the difference between
(x) the lesser of (A) the amount of interest that would have accrued if the
Highest Lawful Rate had at all times been in effect, or (B) the amount of
interest that would have accrued if a varying rate per annum equal to the
interest rate under the Note had at all times been in effect, and (y) the amount
of interest accrued in accordance with the other provisions of this Note and the
Loan Agreement.

         7. This Note is the "Note" referred to in the Loan Agreement, and is
issued pursuant to the Loan Agreement. Reference is made to the Loan Agreement
for a statement of the additional rights and obligations of the undersigned and
Lender. In the event of any conflict between the terms of this Note and the
terms of the Loan Agreement, the terms of the Loan Agreement shall prevail. All
of the terms, covenants, provisions, conditions, stipulations, promises and
agreements contained in the Loan Documents to be kept, observed and/or performed
by the undersigned are made a part

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of this Note and are incorporated into this Note by this reference to the
same extent and with the same force and effect as if they were fully set
forth in this Note; the undersigned promises and agrees to keep, observe and
perform them or cause them to be kept, observed and performed, strictly in
accordance with the terms and provisions thereof.

         8. Each party liable on this Note in any capacity, whether as maker,
endorser, surety, guarantor or otherwise, (i) waives presentment for payment,
demand, protest and notice of presentment, notice of protest, notice of
non-payment and notice of dishonor of this debt and each and every other notice
of any kind respecting this Note and all lack of diligence or delays in
collection or enforcement hereof; (ii) agrees that Lender at any time or times,
without notice to the undersigned or its consent, may grant extensions of time,
without limit as to the number of the aggregate period of such extensions, for
the payment of any principal, interest or other sums due hereunder; (iii) to the
extent permitted by law, waives all exemptions under the laws of the State of
Maryland and/or any state or territory of the United States; (iv) to the extent
permitted by law, waives the benefit of any law or rule of law intended for its
advantage or protection as an obligor under this Note or providing for its
release or discharge from liability on this Note, in whole or in part, on
account of any facts or circumstances other than full and complete payment of
all amounts due under this Note; and (v) agrees to pay, in addition to all other
sums of money due, all cost of collection and attorney's fees, whether suit be
brought or not, if this Note is not paid in full when due, whether at the stated
maturity or by acceleration.

         9. No waiver by Lender of any one or more defaults by the undersigned
in the performance of any of its obligations under this Note shall operate or be
construed as a waiver of any future default or defaults, whether of a like or
different nature. No failure or delay on the part of Lender in exercising any
right, power or remedy under this Note (including, without limitation, the right
to declare this Note due and payable) shall operate as a waiver of such right,
power or remedy nor shall any single or partial exercise of any such right,
power or remedy preclude any other or further exercise of such right, power or
remedy or the exercise of any other right, power or remedy.

         10. If any term, provision, covenant or condition of this Note or the
application of any term, provision, covenant or condition of this Note to any
party or circumstance shall be found by a court of competent jurisdiction to be,
to any extent, invalid or unenforceable, then the remainder of this Note and the
application of such term, provision, covenant, or condition to parties or
circumstances other than those as to which it is held invalid or unenforceable,
shall not be affected thereby, and each term, provision, covenant or condition
shall be valid and enforced to the fullest extent permitted by law. Upon
determination that any such term, provision, covenant or condition is invalid,
illegal or unenforceable, Lender may, but is not obligated to, advance funds to
Borrower under this Note until Borrower and Lender amend this Note so as to
effect the original intent of the parties as closely as possible in a valid and
enforceable manner.

         11. No amendment, supplement or modification of this Note nor any
waiver of any provision of this Note shall be made except in writing executed by
the party against whom enforcement is sought.

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         12. This Note shall be binding upon the undersigned and its successors
and assigns. Notwithstanding the foregoing, the undersigned may not assign any
of its rights or delegate any of its obligations under this Note without the
prior written consent of Lender, which may be withheld in its sole discretion.

         13. THIS NOTE IS TO BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
LAWS OF THE STATE OF MARYLAND WITHOUT RESPECT TO ANY OTHERWISE APPLICABLE
CONFLICTS-OF-LAWS PRINCIPLES, BOTH AS TO INTERPRETATION AND PERFORMANCE, AND THE
PARTIES EXPRESSLY CONSENT AND AGREE TO THE NON-EXCLUSIVE JURISDICTION OF THE
COURTS OF THE STATE OF MARYLAND AND THE UNITED STATES DISTRICT COURT FOR THE
DISTRICT OF MARYLAND AND TO THE LAYING OF VENUE IN THE STATE OF MARYLAND,
WAIVING ALL CLAIMS OR DEFENSES BASED ON LACK OF PERSONAL JURISDICTION, IMPROPER
VENUE, INCONVENIENT FORUM OR THE LIKE. BORROWER HEREBY CONSENTS TO SERVICE OF
PROCESS BY MAILING A COPY OF THE SUMMONS TO BORROWER, BY CERTIFIED OR REGISTERED
MAIL, POSTAGE PREPAID, TO BORROWER'S ADDRESS SET FORTH IN SECTION 9.4 OF THE
LOAN AGREEMENT. BORROWER FURTHER WAIVES ANY CLAIM FOR CONSEQUENTIAL DAMAGES IN
RESPECT OF ANY ACTION TAKEN OR OMITTED TO BE TAKEN BY LENDER IN GOOD FAITH.

         14. THE UNDERSIGNED HEREBY (A) COVENANTS AND AGREES NOT TO ELECT A
TRIAL BY JURY OF ANY ISSUE TRIABLE OF RIGHT BY A JURY, AND (B) WAIVES ANY RIGHT
TO TRIAL BY JURY FULLY TO THE EXTENT THAT ANY SUCH RIGHT SHALL NOW OR HEREAFTER
EXIST. THIS WAIVER OF RIGHT TO TRIAL BY JURY IS GIVEN KNOWINGLY AND VOLUNTARILY
BY THE UNDERSIGNED, AND THIS WAIVER IS INTENDED TO ENCOMPASS INDIVIDUALLY EACH
INSTANCE AND EACH ISSUE AS TO WHICH THE RIGHT TO A JURY TRIAL WOULD OTHERWISE
ACCRUE. LENDER IS HEREBY AUTHORIZED AND REQUESTED TO SUBMIT THIS NOTE TO ANY
COURT HAVING JURISDICTION OVER THE SUBJECT MATTER AND THE PARTIES HERETO, SO AS
TO SERVE AS CONCLUSIVE EVIDENCE OF THE UNDERSIGNED'S WAIVER OF THE RIGHT TO JURY
TRIAL. FURTHER, THE UNDERSIGNED HEREBY CERTIFIES THAT NO REPRESENTATIVE OR AGENT
OF LENDER (INCLUDING LENDER'S COUNSEL) HAS REPRESENTED, EXPRESSLY OR OTHERWISE,
TO ANY BORROWER THAT LENDER WILL NOT SEEK TO ENFORCE THIS WAIVER OF RIGHT TO
JURY TRIAL PROVISION.




                         [SIGNATURES ON FOLLOWING PAGE]

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         IN WITNESS WHEREOF, the undersigned has executed this Note as of the
date first above written.


                          BORROWER:

                          DAOU SYSTEMS, INC.
                          a Delaware corporation


                          By: /s/ Fred McGee
                             -----------------------------------------------
                          Name: Fred McGee
                          Title: Executive Vice President, Chief Financial
                                   Officer


                          DAOU--SENTIENT, INC.
                          a Delaware corporation


                          By: /s/ Fred McGee
                             -----------------------------------------------
                          Name: Fred McGee
                          Title: Vice President, Secretary, Treasurer


                          DAOU--RHI, INC.
                          a Delaware corporation


                          By: /s/ Fred McGee
                             -----------------------------------------------
                          Name: Fred McGee
                          Title: Vice President, Secretary, Treasurer


                          DAOU--TMI, INC.
                          a Delaware corporation


                          By: /s/ Fred McGee
                             -----------------------------------------------
                          Name: Fred McGee
                          Title: Vice President, Secretary, Treasurer


                             [SIGNATURES CONTINUE]

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                          DAOU--SYNEXUS, INC.
                          a Delaware corporation


                          By: /s/ Fred McGee
                             -----------------------------------------------
                          Name: Fred McGee
                          Title: Vice President, Secretary, Treasurer

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